TY  - RPRT
TI  - Morphine tolerance: is there evidence for a conditioning model?
AU  - R L Hayes
AU  - D J Mayer
PY  - 1978
DO  - 10.1126/science.635595
UR  - https://pubmed.ncbi.nlm.nih.gov/635595/
ID  - 635595
ER  -