Permanence for a Delayed Nonautonomous SIR Epidemic Model with Density-Dependent Birth Rate

Based on some well-known SIR models, a revised nonautonomous SIR epidemic model with distributed delay and density-dependent birth rate was considered. Applying some classical analysis techniques for ordinary differential equations and the method proposed by Wang (2002), the threshold value for the...

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Bibliographic Details
Main Authors: Li Yingke, Chen Liang, Wang Kai
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Discrete Dynamics in Nature and Society
Online Access:http://dx.doi.org/10.1155/2011/350892
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