参考文献

Gawrilow; Shgun Uc. Zap. Leningradsk. Univ. Ser. chim.Chem.Abstr., 1953 , # 12 p. 177,183 Uc. Zap. Leningradsk. Univ. Ser. chim.Chem.Abstr., 1955 , p. 8155