%0 Journal Article %J Journal of the American Chemical Society %D 1998 %T Primary step in bacteriorhodopsin photosynthesis: Bond stretch rather than angle twist of its retinal excited-state structure %A Song, Li %A El-Sayed, Mostafa A %B Journal of the American Chemical Society %V 120 %P 8889-8890 %8 Sep %@ 0002-7863 %G eng %M WOS:000075741300038 %R 10.1021/ja980390d