"The quantum coherent mechanism for singlet fission: Experiment and theory"

Chan, W.L.; Berkelbach, T.C.; Provorse, M.R.; Monahan, N.R.; Tritsch, J.R.; Hybertsen, M.S.; Reichman, D.R.; Gao, J.; Zhu, X.Y. Accounts of Chemical Research, 2013, 46(6), 1321-1329.