1. Gilbert Nature 271, 501 (1978).
2. Crick Science, 204, 264 (1979); Gilbert in ICN-UCLA Proc. 1979 (in the press).
3. Slonimski & Tzagoloff Europ. J. Biochem. 61, 27 (1976).
4. Kotylak & Slonimski in The genetic function of mitochondrial DNA (Saccone & Kroon) 143, North Holland Pub. Co., 1976.
5. Tzagoloff et al. in Genetics of Biogenesis of Chloroplast and Mitochondria (Bücher et al.) 419 North Holland Pub. Co., 1976.