Berberich, Stephen M.; Cherney, Robert J.; Colucci, John; Courillon, Christine; Geraci, Leo S.; Kirkland, Thomas A.; Marx, Matthew A.; Schneider, Matthias F.; Martin, Stephen F. Tetrahedron, 2003, vol. 59, # 35 p. 6819 - 6832 doi: 10.1016/S0040-4020(03)00370-3