1. “Proceedings of the Second International Conference on Stable Isotopes” E. R. Klein and P. D. Klein, Eds. National Technical Information Service U. S. Department of Commerce, Springfield, Virginia, 1975.
2. International Symposium on Stable Isotopes: Applications in Pharmacology, Toxicology and Clinical Research, London, Jan. 3-4, 1977.
3. V. L. Arona and C. F. Eck, ref. 1, p. 695.
4. The effects of carbon-13 incorporation into preimplantation mouse embryos on development before and after implantation