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Trujillo-Pisanty, Ivan, Giovanni Hernandez, Ian Moreau-Debord, Marie-Pierre Cossette, Kent Conover, Joseph F. Cheer, and Peter Shizgal. "Cannabinoid Receptor Blockade Reduces the Opportunity Cost At Which Rats Maintain Operant Performance for Rewarding Brain Stimulation." J Neurosci 2011.

Trujillo-Pisanty, Ivan, et al. "Cannabinoid Receptor Blockade Reduces the Opportunity Cost At Which Rats Maintain Operant Performance for Rewarding Brain Stimulation." J Neurosci 2011.