CHEMICAL COMMUNICATIONS, no. 17, page. 1996 - 1997, 2004-01
ORGANIC & BIOMOLECULAR CHEMISTRY, vol. 6, no. 4, page. 712 - 718, 2008-01
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, vol. 46, no. 39815, page. 210 - 213, 2007-01