Sorokin; Ozeryanskii; Pozharskii
Russian Journal of Organic Chemistry, 2002 , vol. 38, # 5 p. 699 - 708

Bryce, Martin R.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1984 , # 11 p. 2591 - 2593