Andreev, N. A.; Bunina-Krivorukova, L. I.; Levashova, V. I.; Aleksandrova, E. K.
Journal of Organic Chemistry USSR (English Translation), 1985 , p. 1398 - 1402
Zhurnal Organicheskoi Khimii, 1985 , vol. 21, # 7 p. 1534 - 1538

Andreev, N. A.; Levashova, V. I.; Bunina-Krivorukova, L. I.
Journal of Organic Chemistry USSR (English Translation), 1984 , vol. 20, p. 331 - 335
Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 2 p. 369 - 374