Lile JA, Wang Z, Woolverton WL, France JE, Gregg TC, Davies HM, Nader MA (Oktober 2003). »The reinforcing efficacy of psychostimulants in rhesus monkeys: the role of pharmacokinetics and pharmacodynamics«. The Journal of Pharmacology and Experimental Therapeutics. 307 (1): 356–66. doi:10.1124/jpet.103.049825. PMID12954808.
Lile JA, Wang Z, Woolverton WL, France JE, Gregg TC, Davies HM, Nader MA (Oktober 2003). »The reinforcing efficacy of psychostimulants in rhesus monkeys: the role of pharmacokinetics and pharmacodynamics«. The Journal of Pharmacology and Experimental Therapeutics. 307 (1): 356–66. doi:10.1124/jpet.103.049825. PMID12954808.