@article {618,
	title = {Effect of Membrane Environment on Proton Permeation through Gramicidin A Channels},
	journal = {J. Phys. Chem. B},
	volume = {111},
	year = {2007},
	pages = {9931-9939},
	doi = {10.1021/jp0708998},
	author = {Qin, Z. and H. L. Tepper and G. A. Voth}
}
