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《Journal of Anshan University of Science and Technology》 2004-01
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Study for a predator-prey system with Holling Ⅳ functional response and periodic coefficients

YANG Jin(Department of Primary Education,Anshan Normal University,Anshan 114005,China)  
On the basis of three mixed species model with Holling Ⅱ functional response and periodic coefficients,a predator-prey system with Holling Ⅳ functional response and periodic coefficients was discussed.Only existed,global symptotical stable and exact positive conditions for the system`s periodic solutions were obtained by the introduction of lts unchanged set.
【CateGory Index】: Q-332
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