参考文献

Davies, Stephen G.; Garner, A. Christopher; Goddard, Euan C.; Kruchinin, Dennis; Roberts, Paul M.; Smith, Andrew D.; Rodriguez-Solla, Humberto; Thomson, James E.; Toms, Steven M. Organic and Biomolecular Chemistry, 2007 , vol. 5, # 12 p. 1961 - 1969