@misc{indiciae902bce1500f7, title = {Avoidance learning enhanced by post-trial morphine injection.}, author = {U Stäubli and J P Huston}, year = {1980}, doi = {10.1016/s0163-1047(80)91860-9}, url = {https://pubmed.ncbi.nlm.nih.gov/7406806/}, note = {Source identifier: 7406806} }