3Li M Y,Muldowney J S. A geometric approach to global stability problems[J].SIAM Journal on Mathematical Analysis,1996,(04):1070-1083.
4Bunomo B,Onofrio A,Lacitignola D. Global stability of an SIR epidemic model with information dependent vaccination[J].Mathematical Biosciences,2008,(01):9-16.doi:10.1016/j.mbs.2008.07.011.
5Chakraborty K,Chakraborty M,Kar T K. Optimal control of harvest and bifurcation of a prey-predator model with stage structure[J].Applied Mathematics and Computation,2011,(21):8778-8792.
