TY  - RPRT
TI  - The enkephalins and opiates: structure-activity relations.
AU  - A S Horn
AU  - J R Rodgers
PY  - 1977
DO  - 10.1111/j.2042-7158.1977.tb11308.x
UR  - https://pubmed.ncbi.nlm.nih.gov/17687/
ID  - 17687
ER  -