Bardo, M., Bowling, S., Rowlett, J., Manderscheid, P., Buxton, S., & Dwoskin, L. (1969). Environmental enrichment attenuates locomotor sensitization, but not in vitro dopamine release, induced by amphetamine. Pharmacology, Biochemistry, and Behavior, 51(2-3), 397-405. https://doi.org/10.1016/0091-3057(94)00413-d (Original work published 1969)