Shchepin, V. V.; Russkikh, N. Yu.; Lapkin, I. I.
Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, # 7 p. 1308 - 1310
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 7 p. 1454 - 1456