References
Goldstein SS, Rall W: Changes of action potential shape and velocity for changing core conductor geometry. Biophysical Journal. 1974, 14 (10): 731-757. 10.1016/S0006-3495(74)85947-3.
Joyner RW, Westerfield M, Moore JW, Stockbridge N: A numerical method to model excitable cells. Biophysical journal. 1978, 22 (2): 155-170. 10.1016/S0006-3495(78)85481-2.