Shishkin, V. N.; Tanaseichuk, B. S.; Lapin, K. K.; Ivkina, A. A.; Butin, K. P.
Journal of Organic Chemistry USSR (English Translation), 1984 , vol. 20, p. 2357 - 2366
Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 12 p. 2588 - 2599

Shishkin, V. N.; Lapin, K. K.; Tanaseichuk, B. S.; Butin, K. P.
Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, # 3 p. 516 - 522
Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 3 p. 577 - 583