Popov, A. F.; Kravchenko, V. V.; Kostenko, L. I.; Kotenko, A. A.; Kovach, N. A.
Journal of Organic Chemistry USSR (English Translation), 1986 , vol. 22, # 10 p. 1915 - 1917
Zhurnal Organicheskoi Khimii, 1986 , vol. 22, # 10 p. 2135 - 2138