参考文献

Vartanyan, R. S.; Kazaryan, Zh. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 9 p. 882 - 883 Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 9 p. 1189 - 1190