S1and S2States of Apo- and Diapocarotenes Christensen, Ronald L. ; Goyette, Michelle ; Gallagher, Laurie ; Duncan, Joanna ; DeCoster, Beverly ; Lugtenburg, Johan ; Jansen, Frans Jos ; van der Hoef, Ineke Abstract Publication: Journal of Physical Chemistry A Pub Date: April 1999 DOI: 10.1021/jp983946s Bibcode: 1999JPCA..103.2399C