TY  - RPRT
TI  - Tail-pinch stimulation: sufficient motivation for learning.
AU  - G F Koob
AU  - P J Fray
AU  - S D Iversen
PY  - 1976
DO  - 10.1126/science.982032
UR  - https://pubmed.ncbi.nlm.nih.gov/982032/
ID  - 982032
ER  -