We study the existence of periodic orbit for a differential system describing the effects of indirect predation over two preys. Besides discussing a generalized version of the model, we present some remarks and numerical experiments for the nonautonomous version of the two models.
"Periodic Orbits for a Three-Dimensional Biological Differential Systems." Abstr. Appl. Anal. 2013 (SI41) 1 - 10, 2013. https://doi.org/10.1155/2013/465183