1. Glasstone, S., Laidler, K., Eyring, H.: The theory of rate processes. New York: McGraw-Hill 1941
2. Pearson, R. G.: Accounts Chem. Res.4, 152 (1971)
3. Stanton, R. E., McIver, Jr., J. W.: J. Am. Chem. Soc.97, 3632 (1975)
4. Mezey, P. G., in: Application of MO theory in organic chemistry, Csizmadia, LG., Ed. Elsevier 1977
5. Fukui, K.: J. Phys. Chem.74, 4161 (1970)