Sheiman,B.M. et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1971 , vol. 7, p. 1119 - 1122
Khimiya Geterotsiklicheskikh Soedinenii, 1971 , vol. 7, # 9 p. 1190 - 1193
Blaise
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1899 , vol. 128, p. 183
Bulletin de la Societe Chimique de France, 1899 , vol. <3> 21, p. 715
Sheiman,B.M. et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1971 , vol. 7, p. 1119 - 1122
Khimiya Geterotsiklicheskikh Soedinenii, 1971 , vol. 7, # 9 p. 1190 - 1193