参考文献

Behaghel; Schneider Chemische Berichte, 1935 , vol. 68, p. 1588,1591 Full Text Show Details Holmberg Arkiv foer Kemi, 1936 , vol. 12 A, # 9 p. 10 Arkiv foer Kemi, 1940 , vol. 14 A, # 9 p. 2