Grigg, Ronald; Markandu, Jasothara; Surendrakumar, Sivagnanasundram; Thornton-Pett, Mark; Warnock, William J. Tetrahedron, 1992, vol. 48, # 47 p. 10399 - 10422 doi: 10.1016/S0040-4020(01)88344-7