TY  - RPRT
TI  - Multiple opiate receptors: emerging concepts.
AU  - R S Zukin
AU  - S R Zukin
PY  - 1981
DO  - 10.1016/0024-3205(81)90527-0
UR  - https://pubmed.ncbi.nlm.nih.gov/6120432/
ID  - 6120432
ER  -