%0 Journal Article %T Multiple periodic solutions of a discrete time predator-prey systems with type IV functional responses %A Zhigang Liu %A Anping Chen %A Jinde Cao %A Fengde Chen %J Electronic Journal of Differential Equations %D 2004 %I Texas State University %X By using the continuation theorem of Mawhin's coincidence degree theory, some sufficient conditions are obtained ensuring the existence of multiple positive periodic solutions of a discrete time predator-prey systems with type IV functional responses. %K Periodic solution %K delayed predator-prey %K coincidence degree %K type IV functional response %K non-autonomous difference equation. %U http://ejde.math.txstate.edu/Volumes/2004/02/abstr.html