共 30 条
- [1] Fonda A(1993)Subharmonic solutions for some second order differential equations with singularities SIAM J. Math. Anal. 24 1294-1311
- [2] Manásevich R(2011)Existence of a periodic solution for continuous and discrete periodic second-order equations with variable potentials J. Appl. Math. Comput. 37 297-312
- [3] Zanolin F(2011)Periodic solutions to singular second-order differential equations: the repulsive case Nonlinear Anal. TMA 74 7078-7093
- [4] Anderson DR(1987)On periodic solutions of nonlinear differential equations with singularities Proc. Am. Math. Soc. 88 109-114
- [5] Avery RI(2000)Classifications and existence of positive solutions of higher-order nonlinear delay differential equations Nonlinear Anal. 41 433-445
- [6] Hakl R(2005)Three positive periodic solutions of nonlinear differential equations with periodic coeffcients Anal. Appl. 3 145-155
- [7] Torres PJ(2008)Periodic solutions for second-order differential equations with a singular nonlinearity Nonlinear Anal. TMA 69 3866-3876
- [8] Zamora M(2016)Periodic solutions of Adv. Differ. Equ. 2016 146-662
- [9] Lazer AC(2016)-Laplacian equations with singularities Bound. Value Probl. 2016 96-331
- [10] Solimini S(2003)Periodic solutions for J. Differ. Equ. 190 643-307