参考文献

Pakhurova, T. F.; Paulin'sh, Ya. Ya.; Gudrunietse, E. Yu.; Dashkevich, S. V.; Ablovatskaya, M. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 11 p. 1217 Khimiya Geterotsiklicheskikh Soedinenii, 1982 , vol. 18, # 11 p. 1562 - 1563