Blake, Antony B.; Chipperfield, John R.; Clark, Stephen; Nelson, Peter G.
Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1972-1999), 1991 , # 4 p. 1159 - 1160
Reese, Colin B.; Sanders, H. Paul
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982 , # 11 p. 2719 - 2724