Eisenman , G. et al. 1980. The Current-voltage Behavior of Ion Channels: Important Features of the Energy Profile of the Gramicidin Channel Deduced from the Conductance-voltage Characteristic in the Limit of Low Ion Concentration. Upsala Journal of Medical Sciences. 85, 3 (Sept. 1980), 247–257. DOI:https://doi.org/10.3109/03009738009179195.