参考文献
Cheshmaritashvili, M. G.; Samsoniya, Sh. A.; Kurkovskaya, L. N.; Suvorov, N. N.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 1 p. 62 - 66
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , vol. 20, # 1 p. 73 - 77