Kulinkovich, O. G.; Tishchenko, I. G.; Reznikov, I. V.; Roslik, N. A.
Journal of Organic Chemistry USSR (English Translation), 1982 , vol. 18, p. 1446 - 1450
Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 8 p. 1654 - 1659

Cohen, Theodore; Myers, Michael
Journal of Organic Chemistry, 1988 , vol. 53, # 2 p. 457 - 460