参考文献

Patiny, Luc; Guichou, Jean-Francois; Keller, Michael; Turpin, Olivier; Rueckle, Thomas; Lhote, Philippe; Buetler, Timo M.; Ruegg, Urs T.; Wenger, Roland M.; Mutter, Manfred Tetrahedron, 2003 , vol. 59, # 28 p. 5241 - 5249