A modified Holling-Tanner predator-prey system with multiple delays is investigated. By analyzing the associated characteristic equation, the local stability and the existence of periodic solutions via Hopf bifurcation with respect to both delays are established. Direction and stability of the periodic solutions are obtained by using normal form and center manifold theory. Finally, numerical simulations are carried out to substantiate the analytical results.
"Stability and Hopf Bifurcation in a Modified Holling-Tanner Predator-Prey System with Multiple Delays." Abstr. Appl. Anal. 2012 1 - 19, 2012. https://doi.org/10.1155/2012/236484