Mayants, A. G.; Klimenko, V. S.; Erina, V. V.; Pyreseva, K. G.; Gordeichuk, S. S.; et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 8 p. 854 - 858
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 8 p. 1067 - 1071

Mayants, A. G.; Pyreseva, K. G.; Gordeichuk, S. S.
Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, # 4 p. 798 - 801
Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 4 p. 884 - 887

Mayants, A. G.; Pyreseva, K. G.; Gordeichuk, S. S.
Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, # 4 p. 798 - 801
Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 4 p. 884 - 887