参考文献

Romashin, Yu. N.; Nadim, Al Mohana; Kulinkovich, O. G. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 10 p. 1110 - 1111 Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 10 p. 1335 - 1336