Baklan, V. F.; Antipenkova, L. S.; Zakharchenko, L. I.; Fesenko, T. E.; Kukhar, V. P. Journal of Organic Chemistry USSR (English Translation), 1984 , vol. 20, # 6 p. 1102 - 1105 Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 6 p. 1212 - 1216