Vila J, Peñalosa E, Escobedo F. Tolerance to Pentabarbital and Sensitation to Amphetamine Due to Assoctative Processes. MJBA [Internet]. 2011 Aug. 29 [cited 2024 May 13];1(2):125-3. Available from: https://revistas.unam.mx/index.php/rmac/article/view/26998