Seeliger,W.; Thier,W.
Justus Liebigs Annalen der Chemie, 1966 , vol. 698, p. 158 - 166

Kita, Yusuke; Nishii, Yuji; Higuchi, Takafumi; Mashima, Kazushi
Angewandte Chemie - International Edition, 2012 , vol. 51, # 23 p. 5723 - 5726