1. Staudinger H, Kupfer O (1912) Ber Dtsch Chem Ges 45:501
2. Kirmse W (1961/1971) Carbene chemistry, 2nd edn. Academic, New York
3. Moss RA, Jones M Jr (eds) (1973/1975) Carbenes, vol I and II. Wiley, New York
4. Brinker UH (ed) (1994, 1998 and 2000) Advances in carbene chemistry, vols 1 and 2. JAI Press, Greenwich
5. Arduengo AJ III (1999) Acc Chem Rev 32:913