参考文献

Gaponik, P. N.; Karavai, V. P.; Grigor'ev, Yu. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 11 p. 1255 - 1258 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 11 p. 1521 - 1524