Citation: Pe. Blatz et Ja. Tompkins, RELATIVE GROUND AND EXCITED-STATE ENERGIES OF CH3(CH=CH)5CH=NC4H9, ITS HYDROGEN-BONDED AND PROTON-TRANSFERRED SPECIES, AND CHARGE PARTITIONING AND DISTRIBUTION IN THE PROTONATED SCHIFF-BASE OF RETINAL, Photochemistry and photobiology, 58(3), 1993, pp. 400-408