Wang, Run-Ling; Li, Wen-Ming; Liu, Meng-Yuan; Xu, Wei-Ren
Journal of the Chinese Chemical Society (Taipei, Taiwan), 2009 , vol. 56, # 1 p. 34 - 39

Weil; Rozentalowna
Roczniki Chemii, vol. 8, p. 44
Chem. Zentralbl., 1928 , vol. 99, # II p. 451