Barton, Derek H. R.; Donnelly, Dervilla M. X.; Finet, Jean-Pierre; Guiry, Patrick J.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1992 , p. 1365 - 1376
Bezuidenhoudt, Barend C. B.; Brandt, E. Vincent; Steenkamp, Jacobus A.; Roux, David G.; Ferreira, Daneel
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1988 , p. 1227 - 1236