1. Chaos in Biological Systems;Chay,1987
2. AUTO: software for continuation and bifurcation problems in ordinary differential equations;Doedel;Monograph, Applied Mathematics, Caltech, May 1986,1986
3. Singularies and Groups in Bifurcation Theory I;Golubitsky,1985
4. Bifurcation of periodic solution of the Hodgkin-Huxley model for the squid giant axon;Hassard;J. theor. Biol.,1978
5. Theory and Applications of Hopf Bifurcation;Hassard,1981