Hub, J. S., Winkler, F. K., Merrick, M., & de Groot, B. L. (2010). Potentials of mean force and permeabilities for carbon dioxide, ammonia, and water flux across a Rhesus protein channel and lipid membranes. Journal of American Chemical Society, 132(38), 13251-13263. Retrieved from http://pubs.acs.org/doi/pdfplus/10.1021/ja102133x.