参考文献

Gorbunov, A. A.; Shklyaev, V. S.; Shklyaev, Yu. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 7 p. 840 - 841 Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 7 p. 1001 - 1002