参考文献

Gaponik, P. N.; Karavai, V. P. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, # 6 p. 681 - 682 Khimiya Geterotsiklicheskikh Soedinenii, 1983 , vol. 19, # 6 p. 841 - 842