Banks, Malcolm R.; Cadogan, J. I. G.; Gosney, Ian; Hodgson, Philip K. G.; Thomson, Dian E.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1991 , # 4 p. 961 - 962
Secretary of State for Defence, in Her Britannic Majesty's Gov., of the United Kingdom of, Great Britain and Northern Ireland
Patent: EP223440 B1, 1991 ;