Abramovitch,R.A. et al.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1974 , p. 2169 - 2172

Brodsky, Benjamin H.; Du Bois
Organic Letters, 2004 , vol. 6, # 15 p. 2619 - 2621

Kim, Joong-Gon; Doo, Ok Jang
Synlett, 2008 , # 18 p. 2885 - 2887