1. D. Bovet and G.L. Gatti, Proc. 2nd Int. Pharm. Meeting, Prague, 75–89, 1963
2. J.R. Smythies, V.S. Johnston and R.J. Bradley, Bull. Brit. Psychol. Soc. 66:20, 1967
3. J.R. Smythies, R.J. Braldey and V.S. Johnston, Psychopharmacologia 10:379–387, 1967
4. A.H. Soloway, B.Whitman and J.R. Messer, J.Pharmacol.Exp.Ther. 127:310, 1960
5. V.S. Johnston and R.J. Bradley, “Recent Advances in Biological Psychiatry”, Vol.X, Plenum Press, New York, 17–48, 1968