@misc{indiciae83c13a6d3287, title = {Schedule-controlled behavior in the morphine-dependent rat.}, author = {R D Ford and R L Balster}, year = {1976}, doi = {10.1016/0091-3057(76)90199-4}, url = {https://pubmed.ncbi.nlm.nih.gov/986048/}, note = {Source identifier: 986048} }