PAPERS

 

  1. V. A. STAIKOS and CH. G. PHILOS, On the asymptotic behavior of nonoscillatory solutions of differential equations with deviating arguments, Hiroshima Math. J. 7 (1977), 9-31.

  2. V. A. STAIKOS and CH. G. PHILOS, Some oscillation and asymptotic properties for linear differential equations, Bull. Fac. Sci. Ibaraki Univ. Ser. A 8 (1976), 25-30 ; 10 (1978), 81-83.

  3. CH. G. PHILOS and V. A. STAIKOS, Asymptotic properties of nonoscillatory solutions of differential equations with deviating arguments, Pacific J. Math. 70 (1977), 221-242.

  4. V. A. STAIKOS and CH. G. PHILOS, Non-oscillatory phenomena and damped oscillations, Nonlinear Anal. 2 (1978), 197-210.

  5. CH. G. PHILOS and V. A. STAIKOS, Non-slow oscillations with damping, Rev. Roumaine Math. Pures Appl. 25 (1980), 1099-1110.

  6. CH. G. PHILOS and V. A. STAIKOS, Quick oscillations with damping, Math. Nachr. 92 (1979), 153-160.

  7. CH. G. PHILOS, Oscillatory and asymptotic behavior of the bounded solutions of differential equations with deviating arguments, Hiroshima Math. J. 8 (1978), 31-48.

  8. CH. G. PHILOS, An oscillatory and asymptotic classification of the solutions of differential equations with deviating arguments, Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. Rend. Lincei (9) Mat. Appl. 63 (1977), 195-203.

  9. CH. G. PHILOS, Oscillatory and asymptotic behaviour of all solutions of differential equations with deviating arguments, Proc. Roy. Soc. Edinburgh Sect. A 81 (1978), 195-210.

  10. CH. G. PHILOS, On the oscillatory and asymptotic behavior of the bounded solutions of differential equations with deviating arguments, Ann. Mat. Pura Appl. 119 (1979), 25-40.

  11. CH. G. PHILOS, Y. G. SFICAS and V. A. STAIKOS, Some results on the asymptotic behavior of nonoscillatory solutions of differential equations with deviating arguments, J. Austral. Math. Soc. Ser. A 32 (1982), 295-317.

  12. CH. G. PHILOS, Some results on the oscillatory and asymptotic behavior of the solutions of differential equations with deviating arguments, Arch. Math. (Brno) 15 (1979), 19-36.

  13. CH. G. PHILOS, Oscillations caused by delays, An. Stiint. Univ. Al. I. Cuza Iasi Sect. I a Mat. 24 (1978), 71-76.

  14. CH. G. PHILOS, Bounded oscillations generated by retardations for differential equations of arbitrary order, Utilitas Math. 15 (1979), 161-182.

  15. V. A. STAIKOS and CH. G. PHILOS, Basic comparison results for the oscillatory and asymptotic behavior of differential equations with deviating arguments, Bull. Inst. Math. Acad. Sinica 9 (1981), 417-445.

  16. CH. G. PHILOS, On the existence of nonoscillatory solutions tending to zero at infinity for differential equations with positive delays, Arch. Math. (Basel) 36 (1981), 168-178.

  17. CH. G. PHILOS and Y. G. SFICAS, Oscillatory and asymptotic behavior of second and third order retarded differential equations, Czechoslovak Math. J. 32 (1982), 169-182.

  18. CH. G. PHILOS, A comparison result for retarded differential equations, Utilitas Math. 17 (1980), 259-269.

  19. CH. G. PHILOS, A comparison result in oscillation theory, Indian J. Pure Appl. Math. 11 (1980), 1-7.

  20. CH. G. PHILOS, A new criterion for the oscillatory and asymptotic behavior of delay differential equations, Bull. Polish Acad. Sci. Math. 29 (1981), 367-370.

  21. CH. G. PHILOS, Oscillation and asymptotic properties of strongly sublinear differential equations with deviating arguments, Casopis Pest. Mat. 108 (1983), 122-132.

  22. CH. G. PHILOS, Oscillatory and asymptotic behavior of strongly superlinear differential equations with deviating arguments, Ann. Mat. Pura Appl. 126 (1980), 343-361.

  23. CH. G. PHILOS, Oscillations of superlinear differential equations with deviating arguments, Arch. Math. (Brno) 18 (1982), 35-48.

  24. CH. G. PHILOS and V. A. STAIKOS, Boundedness and oscillation of solutions of differential equations with deviating arguments, An. Stiint. Univ. Al. I. Cuza Iasi Sect. I a Mat. 26 (1980), 307-317.

  25. CH. G. PHILOS, Nonoscillation and damped oscillations for differential equations with deviating arguments, Math. Nachr. 106 (1982), 109-119.

  26. CH. G. PHILOS, Oscillation and asymptotic behaviour of linear retarded differential equations of arbitrary order, Bull. Math. Soc. Sci. Math. R.S. Roumanie (N.S.) 29 (1985), 355-363.

  27. CH. G. PHILOS and V. A. STAIKOS, A basic asymptotic criterion for differential equations with deviating arguments and its applications to the nonoscillation of linear ordinary equations, Nonlinear Anal. 6 (1982), 1095-1113.

  28. CH. G. PHILOS, On a Kamenev's integral criterion for oscillation of linear differential equations of second order, Utilitas Math. 24 (1983), 277-289.

  29. CH. G. PHILOS, On the asymptotic behavior of the nonoscillatory solutions of differential equations with deviating arguments, Math. Nachr. 113 (1983), 107-128.

  30. CH. G. PHILOS, Oscillation and asymptotic behavior of third order linear differential equations, Bull. Inst. Math. Acad. Sinica 11 (1983), 141-160.

  31. CH. G. PHILOS, Asymptotic behaviour of a class of nonoscillatory solutions of differential equations with deviating arguments, Math. Slovaca 33 (1983), 409-428.

  32. CH. G. PHILOS, Some comparison criteria in oscillation theory, J. Austral. Math. Soc. Ser. A 36 (1984), 176-186.

  33. CH. G. PHILOS, An oscillation criterion for second order sublinear ordinary differential equations, Bull. Polish. Acad. Sci. Math. 32 (1984), 567-572.

  34. CH. G. PHILOS, Oscillation of second order linear ordinary differential equations with alternating coefficients, Bull. Austral. Math. Soc. 27 (1983), 307-313.

  35. CH. G. PHILOS and P. CH. TSAMATOS, Asymptotic equilibrium of retarded differential equations, Funkcial. Ekvac. 26 (1983), 281-293.

  36. CH. G. PHILOS, Oscillation of sublinear differential equations of second order, Nonlinear Anal. 7 (1983), 1071-1080.

  37. CH. G. PHILOS, A second order superlinear oscillation criterion, Canad. Math. Bull. 27 (1984), 102-112.

  38. CH. G. PHILOS, Integral averages and second order superlinear oscillation, Math. Nachr. 120 (1985), 127-138.

  39. CH. G. PHILOS, On second order sublinear oscillation, Aequationes Math. 27 (1984), 242-254.

  40. CH. G. PHILOS, Integral averaging techniques for the oscillation of second order sublinear ordinary differential equations, J. Austral. Math. Soc. Ser. A 40 (1986), 111-130.

  41. CH. G. PHILOS, On oscillation of second order sublinear ordinary differential equations with alternating coefficients, Math. Nachr. 146 (1990), 105-116.

  42. CH. G. PHILOS, An oscillation criterion for superlinear differential equations of second order, J. Math. Anal. Appl. 148 (1990), 306-316.

  43. CH. G. PHILOS, Oscillation criteria for second order superlinear differential equations, Canad. J. Math. 41 (1989), 321-340.

  44. CH. G. PHILOS, Oscillation theorems for linear differential equations of second order, Arch. Math. (Basel) 53 (1989), 482-492.

  45. CH. G. PHILOS, Integral averages and oscillation of second order sublinear differential equations, Differential Integral Equations 4 (1991), 205-213.

  46. G. LADAS, CH. G. PHILOS and Y. G. SFICAS, Oscillations of integro-differential equations, Differential Integral Equations 4 (1991), 1113-1120.

  47. CH. G. PHILOS, Oscillatory behavior of systems of integrodifferential equations, Bull. Greek Math. Soc. 29 (1988), 131-141.

  48. CH. G. PHILOS, Oscillations of first order linear retarded differential equations, J. Math. Anal. Appl. 157 (1991), 17-33.

  49. G. LADAS, CH. G. PHILOS and Y. G. SFICAS, Necessary and sufficient conditions for the oscillation of difference equations, Libertas Math. 9 (1989), 121-125.

  50. G. LADAS, CH. G. PHILOS and Y. G. SFICAS, Existence of positive solutions for certain difference equations, Utilitas Math. 38 (1990), 119-128.

  51. CH. G. PHILOS, Oscillation and nonoscillation in integrodifferential equations, Libertas Math. 12 (1992), 121-138.

  52. G. LADAS, CH. G. PHILOS and Y. G. SFICAS, Sharp conditions for the oscillation of delay difference equations, J. Appl. Math. Simulation 2 (1989), 101-111.

  53. CH. G. PHILOS and Y. G. SFICAS, Positive solutions of difference equations, Proc. Amer. Math. Soc. 108 (1990), 107-115.

  54. CH. G. PHILOS, Oscillations in certain difference equations, Utilitas Math. 39 (1991), 215-218.

  55. CH. G. PHILOS and Y. G. SFICAS, On the existence of positive solutions of integrodifferential equations, Appl. Anal. 36 (1990), 189-210.

  56. CH. G. PHILOS, On oscillations of some difference equations, Funkcial. Ekvac. 34 (1991), 157-172.

  57. CH. G. PHILOS and Y. G. SFICAS, On the nature of the nonoscillatory solutions of a class of neutral delay differential equations, J. Math. Anal. Appl. 154 (1991), 417-434.

  58. G. LADAS, CH. G. PHILOS and Y. G. SFICAS, Oscillations in neutral equations with periodic coefficients, Proc. Amer. Math. Soc. 113 (1991), 123-134.

  59. CH. G. PHILOS, On the oscillation of differential equations with periodic coefficients, Proc. Amer. Math. Soc. 111 (1991), 433-440.

  60. CH. G. PHILOS, Oscillations in difference equations with periodic coefficients, Arch. Math. (Basel) 58 (1992), 453-461.

  61. CH. G. PHILOS, Positive solutions of integrodifferential equations, J. Appl. Math. Stochastic Anal. 6 (1993), 55-68.

  62. G. KARAKOSTAS, CH. G. PHILOS and Y. G. SFICAS, Stable steady state of some population models, J. Dynam. Differential Equations 4 (1992), 161-190.

  63. G. KARAKOSTAS, CH. G. PHILOS and Y. G. SFICAS, The dynamics of some discrete population models, Nonlinear Anal. 17 (1991), 1069-1084.

  64. CH. G. PHILOS, Oscillations in a nonautonomous delay logistic difference equation, Proc. Edinburgh Math. Soc. 35 (1992), 121-131.

  65. CH. G. PHILOS, Oscillations of some delay differential equations with periodic coefficients, J. Math. Anal. Appl. 162 (1991), 452-475.

  66. CH. G. PHILOS, Oscillations in a class of difference equations, Appl. Math. Comput. 48 (1992), 45-57.

  67. CH. G. PHILOS, Oscillation for first order linear delay differential equations with variable coefficients, Funckial. Ekvac. 35 (1992), 307-319.

  68. CH. G. PHILOS and I. K. PURNARAS, Oscillations in superlinear differential equations of second order, J. Math. Anal. Appl. 165 (1992), 1-11.

  69. CH. G. PHILOS and Y. G. SFICAS, On the oscillation of neutral differential equations, J. Math. Anal. Appl. 170 (1992), 299-321.

  70. CH. G. PHILOS and I. K. PURNARAS, Oscillations in linear difference equations with variable coefficients, J. Appl. Math. Stochastic Anal. 4 (1991), 241-258.

  71. CH. G. PHILOS, I. K. PURNARAS and Y. G. SFICAS, Oscillations in higher- order neutral differential equations, Canad. J. Math. 45 (1993), 132-158.

  72. CH. G. PHILOS and I. K. PURNARAS, On the oscillation of second order nonlinear differential equations, Arch. Math. (Basel) 59 (1992), 260-271.

  73. CH. G. PHILOS, I. K. PURNARAS and Y. G. SFICAS, Oscillations in second order linear autonomous differential equations with distributed type deviating arguments, J. Math. Anal. Appl. 176 (1993), 458-492.

  74. CH. G. PHILOS and I. K. PURNARAS, Asymptotic behavior of solutions of second order nonlinear ordinary differential equations, Nonlinear Anal. 24 (1995), 81-90.

  75. CH. G. PHILOS, I. K. PURNARAS and Y. G. SFICAS, Global attractivity in a nonlinear difference equation, Appl. Math. Comput. 62 (1994), 249-258.

  76. CH. G. PHILOS and I. K. PURNARAS, Oscillations in a class of linear difference equations with periodic coefficients, Appl. Anal. 53 (1994), 175-183 .

  77. I.-G. E. KORDONIS and CH. G. PHILOS, On the oscillation of nonlinear two-dimensional differential systems, Proc. Amer. Math. Soc. 126 (1998), 1661-1667.

  78. I.-G. E. KORDONIS, CH. G. PHILOS and I. K. PURNARAS, On the oscillation of some linear difference equations with periodic coefficients, J. Comput. Appl. Math. 84 (1997), 219-241.

  79. I.-G. E. KORDONIS and CH. G. PHILOS, Oscillation of neutral difference equations with periodic coefficients, Comput. Math. Appl. 33 (1997), 11-27.

  80. CH. G. PHILOS and Y. G. SFICAS, An oscillation criterion for first order linear delay differential equations, Canad. Math. Bull. 41 (1998), 207-213.

  81. I.-G. E. KORDONIS and CH. G. PHILOS, Positive solutions of certain difference equations, Differential Equations Dynam. Systems 7 (1999), 281-303.

  82. I.-G. E. KORDONIS and CH. G. PHILOS, Oscillation and nonoscillation in linear delay or advanced difference equations, Math. Comput. Modelling 27 (1998), 11-21.

  83. CH. G. PHILOS, On the existence of positive solutions for certain difference equations and inequalities, J. Inequalities Appl. 2 (1998), 57-69.

  84. I.-G. E. KORDONIS and CH. G. PHILOS, The behavior of solutions of linear integro-differential equations with unbounded delay, Comput. Math. Appl. 38 (1999), 45-50.

  85. CH. G. PHILOS, Asymptotic behaviour, nonoscillation and stability in periodic first-order linear delay differential equations, Proc. Roy. Soc. Edinburgh Sect. A 128 (1998), 1371-1387.

  86. I.-G. E. KORDONIS, N. TH. NIYIANNI and CH. G. PHILOS, On the behavior of the solutions of scalar first order linear autonomous neutral delay differential equations, Arch. Math. (Basel) 71 (1998), 454-464.

  87. I.-G. E. KORDONIS and CH. G. PHILOS, Oscillation and nonoscillation in delay or advanced differential equations and in integrodifferential equations, Georgian Math. J. 6 (1999), 263-284.

  88. I.-G. E. KORDONIS, CH. G. PHILOS and I. K. PURNARAS, Some results on the behavior of the solutions of a linear delay difference equation with periodic coefficients, Appl. Anal. 69 (1998), 83-104.

  89. I.-G. E. KORDONIS and CH. G. PHILOS, On the behavior of the solutions for linear autonomous neutral delay difference equations, J. Differ. Equations Appl. 5 (1999) , 219-233.

  90. CH. G. PHILOS and I. K. PURNARAS, Periodic first order linear neutral delay differential equations, Appl. Math. Comput. 117 (2001), 203-222.

  91. CH. G. PHILOS, I. K. PURNARAS and Y. G. SFICAS, On the behaviour of the oscillatory solutions of second order linear unstable type delay differential equations, Proc. Edinburgh Math. Soc. 48 (2005), 485-498.

  92. CH. G. PHILOS, I. K. PURNARAS and Y. G. SFICAS, On the behavior of the oscillatory solutions of first or second order delay differential equations, J. Math. Anal. Appl. 291 (2004), 764-774.

  93. CH. G. PHILOS and I. K. PURNARAS, The behavior of solutions of linear Volterra difference equations with infinite delay, Comput. Math. Appl. 47 (2004), 1555-1563.

  94. I.-G. E. KORDONIS, CH. G. PHILOS and I. K. PURNARAS, On the behavior of solutions of linear neutral integrodifferential equations with unbounded delay, Georgian Math. J. 11 (2004), 337-348.

  95. CH. G. PHILOS and I. K. PURNARAS, Asymptotic properties, nonoscillation, and stability for scalar first order linear autonomous neutral delay differential equations, Electron. J. Differential Equations 2004 (2004), No. 03, pp. 1-17.

  96. CH. G. PHILOS and I. K. PURNARAS, The behavior of the solutions of periodic linear neutral delay difference equations, J. Comput. Appl. Math. 175 (2005), 209-230.

  97. CH. G. PHILOS and I. K. PURNARAS, An asymptotic result for some delay difference equations with continuous variable, Advances in Difference Equations 2004:1 (2004), 1-10.

  98. JULIO G. DIX, CHRISTOS G. PHILOS and IOANNIS K. PURNARAS, An asymptotic property of solutions to linear nonautonomous delay differential equations, Electron. J. Differential Equations 2005 (2005), No. 10, pp. 1-9.

  99. CH. G. PHILOS and I. K. PURNARAS, An asymptotic result and a stability criterion for linear nonautonomous delay difference equations, Arch. Math. (Basel) 83 (2004), 243-255.

  100. CH. G. PHILOS, I. K. PURNARAS and I. P. STAVROULAKIS, Sufficient conditions for the oscillation of delay difference equations, J. Differ. Equations Appl. 10 (2004), 419-435.

  101. CH. G. PHILOS and I. K. PURNARAS, On the behavior of the solutions for certain first order linear autonomous functional differential equations, Rocky Mountain J. Math. 36 (2006), 1999-2019.

  102. CH. G. PHILOS and I. K. PURNARAS, On the behavior of the solutions for certain linear autonomous difference equations, J. Differ. Equations Appl. 10 (2004), 1049-1067.

  103. CH. G. PHILOS and I. K. PURNARAS, A result on the behavior of the solutions for scalar first order linear autonomous neutral delay differential equations, Math. Proc. Cambridge Philos. Soc. 140 (2006), 349-358.

  104. CH. G. PHILOS and I. K. PURNARAS, Asymptotic behaviour and stability to linear non-autonomous neutral delay difference equations, J. Differ. Equations Appl. 11 (2005), 503-513.

  105. CH. G. PHILOS, I. K. PURNARAS and P. CH. TSAMATOS, Asymptotic to polynomials solutions for nonlinear differential equations, Nonlinear Anal. 59 (2004), 1157-1179.

  106. CH. G. PHILOS and P. CH. TSAMATOS, Solutions approaching polynomials at infinity to nonlinear ordinary differential equations, Electron. J. Differential Equations 2005 (2005), No. 79, pp. 1-25.

  107. K. G. MAVRIDIS, CH. G. PHILOS and P. CH. TSAMATOS, Existence of solutions of a boundary value problem on the half-line to second order nonlinear delay differential equations, Arch. Math. (Basel) 86 (2006), 163-175.

  108. CH. G. PHILOS and I. K. PURNARAS, More on the behavior of solutions to linear integrodifferential equations with unbounded delay, Funckial. Ekvac. 48 (2005), 393-414.

  109. CH. G. PHILOS and I. K. PURNARAS, On linear Volterra difference equations with infinite delay, Advances in Difference Equations 2006 (2006), Art. 78470, 1-28.

  110. K. G. MAVRIDIS, CH. G. PHILOS and P. CH. TSAMATOS, Multiple positive solutions for a second order delay boundary value problem on the half-line, Ann. Polon. Math. 88 (2006), 173-191.

  111. CH. G. PHILOS, I. K. PURNARAS and P. CH. TSAMATOS, Global solutions approaching lines at infinity to second order nonlinear delay differential equations, Funckial. Ekvac. 50 (2007), 213-259.

  112. J. G. DIX, CH. G. PHILOS and I. K. PURNARAS, Asymptotic properties of solutions to linear non-autonomous neutral differential equations, J. Math. Anal. Appl. 318 (2006), 296-304.

  113. R. P. AGARWAL, CH. G. PHILOS and P. CH. TSAMATOS, Global solutions of a singular initial value problem to second order nonlinear delay differential equations, Math. Comput. Modelling 43 (2006), 854-869.

  114. CH. G. PHILOS and I. K. PURNARAS, On the behavior of the solutions to periodic linear delay differential and difference equations, J. Math. Anal. Appl. 322 (2006), 847-863.

  115. CH. G. PHILOS and I. K. PURNARAS, On periodic linear neutral delay differential and difference equations, Electron. J. Differential Equations 2006 (2006), No. 110, pp. 1-25.

  116. CH. G. PHILOS, I. K. PURNARAS and Y. G. SFICAS, Asymptotic behavior of the oscillatory solutions to first order non-autonomous linear neutral delay differential equations of unstable type, Math. Comput. Modelling 46 (2007), 422-438.

  117. CH. G. PHILOS, I. K. PURNARAS and Y. G. SFICAS, Asymptotic decay of the oscillatory solutions to first order non-autonomous linear unstable type delay differential equations, Funckial. Ekvac. 49 (2006), 385-413.

  118. CH. G. PHILOS and I. K. PURNARAS, On the behavior of the solutions to autonomous linear difference equations with continuous variable, Arch. Math. (Brno) 43 (2007), 133-155.

  119. CH. G. PHILOS and I. K. PURNARAS, On non-autonomous linear difference equations with continuous variable, J. Differ. Equations Appl. 12 (2006), 651-668.

  120. CH. G. PHILOS, Positive increasing solutions on the half-line to second order nonlinear delay differential equations, Glasg. Math. J. 49 (2007), 197-211.

  121. CH. G. PHILOS and I. K. PURNARAS, Behavior of the solutions to second order linear autonomous delay differential equations, Electron. J. Differential Equations 2007 (2007), No. 106, pp. 1-35.

  122. CH. G. PHILOS, On a boundary value problem on the half-line for nonlinear two-dimensional delay differential systems, Ann. Polon. Math. 92 (2007), 133-153.

  123. G. E. CHATZARAKIS, CH. G. PHILOS and I. P. STAVROULAKIS, On the oscillation of the solutions to linear difference equations with variable delay, Electron. J. Differential Equations 2008 (2008), No. 50, pp. 1-15.

  124. CH. G. PHILOS and I. K. PURNARAS, An asymptotic property of the solutions to second order linear nonautonomous delay differential equations, Math. Comput. Modelling 49 (2009), 1350-1358.

  125. CH. G. PHILOS and I. K. PURNARAS, Sufficient conditions for the oscillation of linear difference equations with variable delay, J. Difference Equ. Appl. 14 (2008), 629-644.

  126. CH. G. PHILOS, On the existence of positive solutions on the half-line to nonlinear two-dimensional delay differential systems, Proc. Edinburgh Math. Soc. 52 (2009), 771-786.

  127. CH. G. PHILOS and I. K. PURNARAS, A boundary value problem on the whole line to second order nonlinear differential equations, Georgian Math. J. 17 (2010), 373-390.

  128. CH. G. PHILOS and I. K. PURNARAS, An asymptotic result for second order linear nonautonomous neutral delay differential equations, Hiroshima Math. J. 40 (2010), 47-63.

  129. CH. G. PHILOS, Positive solutions to a higher-order nonlinear delay boundary value problem on the half-line, Bull. London Math. Soc. 41 (2009), 872-884.

  130. CH. G. PHILOS, A boundary value problem on the half-line for higher-order nonlinear differential equations, Proc. Roy. Soc. Edinburgh Sect. A 139 (2009), 1017-1035.

  131. G. E. CHATZARAKIS, CH. G. PHILOS and I. P. STAVROULAKIS, An oscillation criterion for linear difference equations with general delay argument, Port. Math. 66 (2009), 513-533.

 

 

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