Nakagawa, Masatoshi; Hanato, Hiroyuki; Tamura, Toshihiro
Patent: US2009/5557 A1, 2009 ;
Location in patent: Page/Page column 20-21 ;

Shabana, R.; Galal, A.; Mark, H. B.; Zimmer, Hans; Gronowitz, S.; Hoernfeldt, A.-B.
Phosphorus, Sulfur and Silicon and the Related Elements, 1990 , vol. 48, # 1-4 p. 239 - 244

Yui, Koji; Aso, Yoshio; Otsubo, Tetsuo; Ogura, Fumio
Chemistry Letters, 1988 , p. 1179 - 1182