McCarthy; Huber; Le; Laskovics; Matthews
Tetrahedron, 1996 , vol. 52, # 1 p. 45 - 58

Koizumi, Toru; Hagi, Toru; Horie, Yoshiharu; Takeuchi, Yoshio
Chemical and Pharmaceutical Bulletin, 1987 , vol. 35, # 9 p. 3959 - 3962