參考文獻:
Muminov, A. Yudin, L. G. Zinchenko, E. Ya. Romanova, N. N. Kost, A. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 9 p. 1012 - 1015 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 9 p. 1218 - 1221