Cole and Curtis

Curtis, H.J. & Cole, K. S. (1940) Membrane action potentials from the squid giant axon. J. Cell. & Comp. Physiol. 15: 147-157
Curtis, H.J. & Cole, K. S. (1942) Membrane resting and action potentials from the squid giant axon. J. Cell. & Comp. Physiol. 19: 135-144