参考文献

Shikhaliev, Kh. S.; Shmyreva, Zh. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1988 , vol. 24, # 8 p. 898 - 900 Khimiya Geterotsiklicheskikh Soedinenii, 1988 , # 8 p. 1091 - 1093