Fluorescence of Cysteine and Cystine
Hendrik F Hameka, James O. Jensen , Kate K. Ong , Alan C. Samuels ,and Constantine P. Vlahacos
J. Phys. Chem. A, 1998, 102 (2), pp 361–367
DOI: 10.1021/jp971631r
Calculate transition to the ground state of small molecules.