1. Evidence for a negative feedback mechanism in the biosynthesis of isoleucine;Umbarger;Science,1956
2. The metabolic regulation of purine interconversion and of histidine biosynthesis;Magasanik,1958
3. Feedback control of the formation of biosynthetic enzymes;Gorini,1958
4. Rhythmic Activity in Animal Physiology and Behaviour;Cloudsley-Thompson,1961