Vyas, Sandhya M.; Turanek, Jaroslav; Knoetigova, Pavlina; Kasna, Andrea; Kvardova, Veronika; Koganti, Venkat; Rankin, Stephen E.; Knutson, Barbara L.; Lehmler, Hans-Joachim New Journal of Chemistry, 2006 , vol. 30, # 6 p. 944 - 951