Positive periodic solutions for a predator-prey model with time delays and impulsive effect.
Gao, Shan, Li, Yongkun (2008)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Gao, Shan, Li, Yongkun (2008)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Sun, Jingan, Cui, Yonghong (2004)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Zhao, Kaihong, Li, Yongkun (2011)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Zeng, Zhijun, Zhai, Li (2007)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Liu, Yan, Wang, Quanyi (2008)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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He, Rong-Hua, Li, Hong-Xu, Zhang, Liang (2009)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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He, Jiwei (2007)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Yang, Dandan (2007)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Mei-Lan Tang, Xin-Ge Liu (2011)
Applications of Mathematics
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In this paper, sharp a priori estimate of the periodic solutions is obtained for the discrete analogue of the continuous time ratio-dependent predator-prey system, which is governed by nonautonomous difference equations, modelling the dynamics of the competing preys and one predator having nonoverlapping generations. Based on more precise a priori estimate and the continuation theorem of the coincidence degree, an easily verifiable sufficient criterion of the existence of positive...
Cui, Jingan, Guo, Mingna (2005)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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