Zakharkin, L. I.; Guseva, V. V.; Churilova, I. M.; Maskaev, A. K.; Kobilinskaya, I. F.; Tanchuk, Yu. V.
Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, p. 1534 - 1536
Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 9 p. 1813 - 1816