Bredikhina, Z. A.; Buzykin, B. I.; Kitaev, Yu. P.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 4 p. 427 - 433
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 4 p. 537 - 543

Usol'tseva, S. V.; Andronnikova, G. P.; Nikolaeva, S. L.
Journal of Organic Chemistry USSR (English Translation), 1991 , vol. 27, # 11.2 p. 2172 - 2176
Zhurnal Organicheskoi Khimii, 1991 , vol. 27, # 11 p. 2445 - 2450

Usol'tseva, S. V.; Andronnikova, G. P.; Nikolaeva, S. L.; Lebedev, A. T.; Shevyrin, V. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 4 p. 442 - 446
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 4 p. 554 - 558

Johne; Seifert; Bulka
Die Pharmazie, 1978 , vol. 33, # 5 p. 259 - 263

Usol'tseva, S. V.; Andronnikova, G. P.; Nikolaeva, S. L.; Lebedev, A. T.; Shevyrin, V. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 4 p. 442 - 446
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 4 p. 554 - 558

Johne; Seifert; Bulka
Die Pharmazie, 1978 , vol. 33, # 5 p. 259 - 263