1. Baer, S.M., Erneux, T., Tier, C.: Singular Hopf bifurcations arising in neuron models. In preparation, 1985
2. Bell, J., Cosner, C.: Threshold conditions for a diffusive model of a myelinated axon. J. Math. Biol. 18, 39?52 (1983)
3. Cartwright, M. L.: Forced oscillations in nearly sinusoidal systems. J. Inst. Elec. Engr. 95, 88?96 (1948)
4. Dodge, F. A., Cooley, J. W.: Action potential of the motorneuron. IBM J. Res. Devel. 17, 219?229 (1973).
5. Doedel, E. J.: AUTO: A program for the automatic bifurcation analysis of autonomous systems. Proc. 10th Manitoba Conf. on Num. Math, and Comp., Winnipeg, Cong. Num. 30, 265?284 (1981)