Genet, Jean Pierre; Blart, Errol; Savignac, Monique; Lemeune, Stephane; Lemaire-Audoire, Sandrine; Paris, Jean-Marc; Bernard, Jean-Marie
Tetrahedron, 1991 , vol. 50, # 2 p. 497 - 503

Guibe, F.; Dangles, O.; Balavoine, G.
Tetrahedron Letters, 1986 , vol. 27, # 21 p. 2365 - 2368