Xiao, D., and Zhu, H., 2006: Multiple focus and Hopf bifurcations in a predator-prey system with nonmonotonic functional response. SIAM J. Appl. Math., Vol. 66 (3), p. 802–819
Xiao, D., and Zhu, H., 2006: Multiple focus and Hopf bifurcations in a predator-prey system with nonmonotonic functional response. SIAM J. Appl. Math., Vol. 66 (3), p. 802–819