Velazquez, Christopher S.; Fox, Glenn A.; Broderick, William E.; Andersen, Kevin A.; Anderson, Oren P.; Barrett, Anthony G. M.; Huffman, Brian M.
Journal of the American Chemical Society, 1992 , vol. 114, # 19 p. 7416 - 7424

Advanced Research and Technology Institute, Inc.
Patent: US6828439 B1, 2004 ;
Location in patent: Page column 35; sheet 9 ;

Wolf,W. et al.
Angewandte Chemie, 1960 , vol. 72, p. 963 - 966