Pesin,V.G.; Sergeev,V.A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1967 , vol. 3, p. 662 - 666
Khimiya Geterotsiklicheskikh Soedinenii, 1967 , vol. 3, # 5 p. 839 - 844

Pesin,V.G.; Sergeev,V.A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1967 , vol. 3, p. 662 - 666
Khimiya Geterotsiklicheskikh Soedinenii, 1967 , vol. 3, # 5 p. 839 - 844

Pesin, V. G.; Sergeev, V. A.; Ostashkova-Kul'kova, N. V.
Journal of Organic Chemistry USSR (English Translation), 1989 , vol. 25, # 8.2 p. 1626 - 1628
Zhurnal Organicheskoi Khimii, 1989 , vol. 25, # 8 p. 1799 - 1801