TY  - RPRT
TI  - Drug self-administration methods in abuse liability evaluation.
AU  - J E Henningfield
AU  - C Cohen
AU  - S J Heishman
PY  - 1991
DO  - 10.1111/j.1360-0443.1991.tb01750.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1786489/
ID  - 1786489
ER  -