CHEMISTRY OF MATERIALS, vol. 12, no. 8, page. 2151 - 2156, 2000-08
CHEMICAL COMMUNICATIONS , no. 17, page. 1669 - 1670, 2000-01
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 121, no. 49, page. 11491 - 11502, 1999-12-15