Hidekazu Fukai, Taishin Nomura, Shinji Doi, Shunsuke Sato. Hopf bifurcations in multiple-parameter space of the Hodgkin-Huxley equations II. Singularity theoretic approach and highly degenerate bifurcations. Biological Cybernetics, 82(3):223-229, 2000. [doi]
Abstract is missing.