1. Ahmed, A.: A multi-enzyme complex specified by the histidine-3 region of Neurospora. (Abstract). Genetics 54, 316 (1966).
2. —: The nature of complementation among mutants in the histidine-3 region of Neurospora crassa. Brookhaven Symp. Biol. 17, 53–65 (1964).
3. Ames, B. N., R. F. Goldberger, P. E. Hartman, R. G. Martin, and J. R. Roth: The histidine operon. In: Regulation of nucleic acid and protein biosynthesis, p. 272–287 (ed. V. V. Koningsberger and L. Bosch). Amsterdam: Elsevier Publ. Co. 1967.
4. —: Chromosomal alterations affecting the regulation of histidine biosynthetic enzymes in Salmonella. J. molec. Biol. 7, 23–42 (1963).
5. Bernstein, H.: On the mechanism of intragenic recombination. II. Neurospora crassa. J. theoret. Biol. 6, 347–370 (1964).