Shimada, Kazuaki; Shibuya, Hiroki; Makino, Kenshiro; Otsuka, Tatsuya; Onuma, Yuki; Aoyagi, Shigenobu; Takikawa, Yuji Phosphorus, Sulfur and Silicon and the Related Elements, 2010 , vol. 185, # 5-6 p. 1077 - 1089