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Negus, S.S., Mello, N.K. & Barak Caine, S. The utility of “tolerance” as a concept in the study of drug self-administration. Psychopharmacology 171, 362–363 (2004). https://doi.org/10.1007/s00213-003-1606-8
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DOI: https://doi.org/10.1007/s00213-003-1606-8