Odinokov, V. N.; Akhmetova, V. R.; Savchenko, R. G.; Vyrypaev, E. M.; Tolstikov, G. A. Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, p. 71 - 74 Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 1 p. 84 - 88