1. S.K. Shapiro and F. Schlenk, ed., Transmethylation and methionine Biosynthesis. University Chicago Press, Chicago, Ill. 1965.
2. R.J. Baldessarini, Int. Rev. Neurobiol.18, 41 (1975).
3. C.D. Chang and K. Coward, Molec. Pharmac.11, 701 (1975).
4. P. Fonlupt, M. Roche, L. Cronenberger and H. Pacheco, French patent 28 avril 1978, Institut Mérieux (no 78 12711).
5. S.H. Snyder and J.T. Coyle, J. Pharmac. exp. Ther.165, 78 (1969).