Rodinovskaya, L. A.; Sharanin, Yu. A.; Litvinov, V. P.; Shestopalov, A. M.; Promonenkov, V. K.; et al. Journal of Organic Chemistry USSR (English Translation), 1985 , vol. 21, # 11 p. 2230 - 2235 Zhurnal Organicheskoi Khimii, 1985 , vol. 21, # 11 p. 2439 - 2444