Dickopf, S., Alexiev, U., Krebs, M. P., Otto, H., Mollaaghababa, R., Khorana, H. G., & Heyn, M. P. (1995). Proton transport by a bacteriorhodopsin mutant, aspartic acid-85-->asparagine, initiated in the unprotonated Schiff base state. Proc Natl Acad Sci U S A.

Dickopf, S., U. Alexiev, M P. Krebs, H. Otto, R. Mollaaghababa, H G. Khorana, and M P. Heyn. "Proton Transport By a Bacteriorhodopsin Mutant, Aspartic Acid-85-->asparagine, Initiated in the Unprotonated Schiff Base State." Proc Natl Acad Sci U S A 1995.

Dickopf, S., et al. "Proton Transport By a Bacteriorhodopsin Mutant, Aspartic Acid-85-->asparagine, Initiated in the Unprotonated Schiff Base State." Proc Natl Acad Sci U S A 1995.