TY - JOUR TI - Impulses and Physiological States in Theoretical Models of Nerve Membrane AU - Richard Fitzhugh PY - 1961 JO - Biophysical Journal DO - 10.1016/s0006-3495(61)86902-6 UR - https://doi.org/10.1016/s0006-3495(61)86902-6 ER -