Plas, Henk C. van der; Charushin, Valery N.; Veldhuizen, Beb van
Journal of Organic Chemistry, 1983 , vol. 48, # 8 p. 1354 - 1357

Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 23, # 4 p. 422 - 425
Khimiya Geterotsiklicheskikh Soedinenii, , # 4 p. 508 - 512

Remennikov, G. Ya.; Kurilenko, L. K.; Boldyrev, I. V.; Cherkasov, V. M.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 4 p. 422 - 425
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 4 p. 508 - 512

Remennikov, G. Ya.; Kurilenko, L. K.; Boldyrev, I. V.; Cherkasov, V. M.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 4 p. 422 - 425
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 4 p. 508 - 512