Kopeikin, V. A.; Kopeikin, V. V.; Mironov, G. S.; Musabekov, Yu. Yu.; Ustinov, V. A. Journal of Organic Chemistry USSR (English Translation), 1983 , vol. 19, # 7 p. 1401 - 1402 Zhurnal Organicheskoi Khimii, 1983 , vol. 19, # 7 p. 1555 - 1556