参考文献

Grinev, A. N.; Kaplina, N. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 7 p. 767 - 770 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , # 7 p. 925 - 928