TY  - RPRT
TI  - Opioid Peptides: introduction.
AU  - J Hughes
AU  - H W Kosterlitz
PY  - 1983
DO  - 10.1093/oxfordjournals.bmb.a071781
UR  - https://pubmed.ncbi.nlm.nih.gov/6301604/
ID  - 6301604
ER  -