TY  - RPRT
TI  - ADJUSTING FIXED-RATIO SCHEDULES IN THE SQUIRREL MONKEY.
AU  - R T KELLEHER
AU  - W FRY
AU  - L COOK
PY  - 1964
DO  - 10.1901/jeab.1964.7-69
UR  - https://pubmed.ncbi.nlm.nih.gov/14120144/
ID  - 14120144
ER  -