1. Adams, R. L. P. Delayed methylation of DNA in developing sea urchin embryos. Nature (New Biol.), 1973, 244:131, 27–29.
2. Aghajanian, G. K., & Freedman, D. X. Biochemical and morphological aspects of LSD pharmacology. In D. H. Efron (Ed.), Psychopharmacology—A Review of Progress 1957–1967, PHSP #1836. Superintendent of Documents, Washington, D.C., 1968, pp. 1185-1193.
3. Aghajanian, G. K., Sheard, M. H., & Foote, W. E. LSD and mescaline: comparison of effects on single units in the midhrain raphé. In D. H. Efron (Ed.), Psychotomimetic Drugs, New York: Raven Press, 1970, pp. 165–170.
4. Ahn, H. A., Walker, R. W., VandenHeuvel, W. J. A., Rosegay, A., & Mandel, L. R. Studies on the in vivo biosynthesis of N, N-dimethyltryptamine (DMT) in the rabbit and rat. Fed. Proc. 1973, 32, 511.
5. Alexander, F., Curtis, G. C., III, Sprince, H. & Crosley, A. P., Jr. l-Methionine and l-tryptophan feedings in non-psychotic and schizophrenic patients with and without tranylcypromine. J. Nerv. Ment. Dis., 1963, 137, 135–142.