Shimizu, Hiroshi; Okada, Naoyuki; Yoshimatsu, Mitsuhiro
Tetrahedron Letters, 2001 , vol. 42, # 25 p. 4183 - 4186

Aitken, R. Alan; Cadogen, J. I. G.; Gosney, Ian; Newlands, Stephen
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1994 , # 16 p. 2301 - 2308