TY  - RPRT
TI  - Schedule-induced aggression as a function of fixed-ratio value.
AU  - D R Cherek
AU  - R Pickens
PY  - 1970
DO  - 10.1901/jeab.1970.14-309
UR  - https://pubmed.ncbi.nlm.nih.gov/5530984/
ID  - 5530984
ER  -