Prezhdo, V. V.; Bogunets, N. P.; Chaikovskaya, V. A.; Shevchenko, T. N.; Surov, Yu. N.
Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, # 7 p. 1366 - 1372
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 7 p. 1521 - 1527