1. Akaboshi, M. and Kawai, K.: 1971b,Biochem. Biophys. Acta 246, 194.
2. Akaboshi, M., Kawai, K., and Waki, A.: 1971a,Biochim. Biophys. Acta 238, 5.
3. Akaboshi, M., Kawai, K., Maki, H., and Kawamoto, K.: 1978, in H. Noda (ed.),Origins of Life, Center of Academic Publication Japan, p. 343.
4. Allen, W. and Ponnamperuma, C.: 1967,Curr. Mod. Biol. 1, 24.
5. Harbottle, G. and Sutin, N.: 1958,J. Phys. Chem. 62, 1344.