1. Butterworths Documentation of Molecular Spectroscopy: 1966, 1970, 1972, Butterworth Scientific Publication
2. Giard M., Pajot F., Lamarre, J.M., Serra G., Caux E., Gispert R., Leger, A. and Rouan, D.: 1988, Astron. Astrophys.
201, L1.
3. Hayes, J.M.: 1967, Geochim. Cosmochim. Acta
31, 1395.
4. Hoyle, F. and Wickramasinghe, N.C.: 1977, Nature
270, 323.
5. Hoyle, F. and Wickramasinghe, N.C.: 1979, Astrophys. Space Sci.
65, 241.