Vinokurov, Yu. V.; Solodova, K. V.; Shalfeeva, E. N.; Shein, S. M. Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, # 3 p. 566 - 569 Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 3 p. 632 - 635