参考文献

Rozhkov, V. S.; Smushkevich, Yu. I.; Suvorov, N. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 3 p. 274 - 279 Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 3 p. 372 - 376