1. Ahtee, L., 1973, Catalepsy and stereotyped behavior in rats treated chronically with metha-done: relation to brain homovanillic acid levels, J. Pharm. Pharmacol. 25:649.
2. Ahtee, L., and Kaarianinen, I., 1973, The effect of narcotic analgesics on the homovanillic acid content of rat caudate nucleus, J. Neurochem. 20:206.
3. Akera, T., and Brody, M., 1968, The addiction cycle to narcotics in the rat and its relation to catecholamines, Biochem. Pharmacol. 17:675.
4. Andén, N. E., 1970, Effects of amphetamine and some other drugs on central catecholamine mechanisms, in: Amphetamines (E. Costa and S. Garattini, eds.), pp. 447–462, Raven Press, New York.
5. Andén, N. E., 1972, Dopamine turnover in the corpus striatum and the limbic system after treatment with neuroleptic and anticholinergic drugs, J. Pharm. Pharmacol. 24:905.