1. Addadi, L., Cohen, M.D., Lahav, M. (1975). J.Chem.Soc.Chem.Comm. p. 471
2. Amariglio, A., Amariglio, H. (1971). In: Chemical evolution and the origin of life, R. Buvet, C. Ponnamperuma, eds., p. 63. Amsterdam: North-Holland
3. Bender, P.E. (1969). Footnote 7 in Curtin, D.Y., Stein, A.R.: Can.J.Chem. 47, 3637
4. Benghiat, V., Leiserowitz, L. (1972). J.Chem.Soc. Perkin II, 1763
5. Bonner, W.A., Kavasmaneck, P.R., Martin, F.S., Flores, J.J. (1974). Sci. 186, 143