Zaitsev, B. E.; Sycheva, E. D.; Sheban, G. V.; Lisitsyna, E. S.; Mikhailova, T. A.; et al.
Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, # 8 p. 1556 - 1564
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 8 p. 1743 - 1751