TY  - RPRT
TI  - PARTIAL NEGATIVE REINFORCEMENT: FIXED-RATIO ESCAPE.
AU  - D P HENDRY
AU  - L S HENDRY
PY  - 1963
DO  - 10.1901/jeab.1963.6-519
UR  - https://pubmed.ncbi.nlm.nih.gov/14055946/
ID  - 14055946
ER  -