Staab, Heinz A. Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;
http://www.sciencedirect.com/science/article/pii/1010603094800332/pdf?md5=b49ffd6e8a2ab735b71be38f34585d97&pid=1-s2.0-1010603094800332-main.pdf (Any fulltext)
McGarry, P. F., Doubleday, C. E. J., Wua, C.-H., Staab, H. A., & Turro, N. J. (1994). UV-vis absorption studies of singlet to triplet intersystem crossing rates of aromatic ketones: effects of molecular geometry. Journal of Photochemistry and Photobiology A: Chemistry, 77(2-3), 109-117. doi:10.1016/1010-6030(94)80033-2.