1. For a recent review see Reissig, H.-U.: Organic Synthesis Via Cyclopropanes: Principles and Applications, in: The Chemistry of the Cyclopropyl Group. Chapter 11 (ed. Rappoport, Z.) John Wiley and Sons, Chichester, 1987
2. Greenberg, A., Stevenson, T. A.: Structure and Energies of Substituted Strained Organic Molecules, in: Molecular Structure and Energetics, Vol. 3 (eds. Liebman, J. F., Greenberg, A.), VCH, Weinheim 1986, pp 193–266
3. De Meijere, A.: Angew. Chem. 91, 867 (1979); Angew. Chem. Int. Ed. Engl. 18, 809 (1979)
4. Seebach, D.: Angew. Chem. 91, 259 (1979); Angew. Chem. Int. Ed. Engl. 18, 239 (1979)
5. Trost, B. M.: Topics in Current Chemistry 133, 3 (1986)