参考文献

Andreichikov, Yu. S.; Sivkova, M. P.; Shapet'ko, N. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 10 p. 1008 - 1011 Khimiya Geterotsiklicheskikh Soedinenii, 1982 , vol. 18, # 10 p. 1312 - 1315