共 9 条
- [1] Kuang Y., Feldstein A., Boundedness of solutions of a nonlinear nonautonomous neutral delay e-quation, J. Math. Anal. Appl, 156, pp. 293-304, (1991)
- [2] Gopalsamy K., He X., Wen L., On a periodic neutral logistic equation, Glasgow Math. J, 33, pp. 281-286, (1991)
- [3] Gopalsamy K., Zhang B.G., On a neutral delay logistic equation, Dynamics Stability Systems, 2, pp. 183-195, (1988)
- [4] Pielou E.C., Mathematics Ecology, (1977)
- [5] Kuang Y., Delay Differential Equations with Applications in Population Dynamics, (1993)
- [6] Hui F., Jibin L., On the existence of periodic solutions of a neutral delay model of single-species population growth, J. Math. Anal. Appl, 259, pp. 8-17, (2001)
- [7] Gaines R.E., Mawhin J.L., Coincidence degree and nonlinear differential equations, 586, (1977)
- [8] Liu Z.D., Mao Y.P., Existence theorem for periodic solutions of higher order nonlinear differential equations, J. Math. Anal. Appl, 216, pp. 481-490, (1997)
- [9] Petryshyn W.V., Yu Z.S., Existence theorem for periodic solutions of higher order nonlinear periodic boundary value problems, Nonlinear Anal, 6, 9, pp. 943-969, (1982)