1. On the Existence of a Tungsten Carbonyl Carbene Complex
2. (a) Quayle, P.Comprehensive Organic Functional GroupTransformation; Katrizky, A. R., Meth-Cohn, O., Rees, C. W., Eds.; Elsevier: Oxford, UK, 1995; Vol. 5, pp 931 and 1161.
3. (b) Elschenbroich, C.; Salzer, A.Organometallics; Wiley-VCH: Weinheim, 1992; Chapter 14, and references therein.