Pindur, Ulf; Erfanian-Abdoust, Houshang
Liebigs Annalen der Chemie, 1989 , p. 227 - 230

Carvalho, Helena Nandin de; Dmitrienko, Gary I.; Nielson, Kent E.
Tetrahedron, 1990 , vol. 46, # 16 p. 5523 - 5532

Moody, Christopher J.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1985 , p. 2505 - 2508