1. Arditti, R. R., and G. A. Sermonti: Modification by manganous chloride of the frequency of mutations induced by nitrogen mustard. Genetics 47, 761–768 (1962).
2. Auerbach, C.: The role of mutagen specificity in mutation breeding. Proc. of the Symposium on the Mutational Process, Mechanism of Mutation and inducing factors, Praha, 243–250 (1965).
3. Clarke, C. H.: A case of mutagen specificity attributable to a plating medium effect. Z. Vererbungsl. 93, 435–440 (1962).
4. Ebersold, W. T.: Crossing-over in Chlamydomonas reinhardi. Amer. J. Bot. 43, 408–410 (1956).
5. —: Biochemical genetics. In: Physiology and biochemistry of algae (R. A. Lewin, ed.), p. 731–739. New York: Acad. Press 1962.