TY  - RPRT
TI  - Behavior under extended exposure to a high-value fixed interval reinforcement schedule.
AU  - W W Cumming
AU  - W N Schoenfeld
PY  - 1958
DO  - 10.1901/jeab.1958.1-245
UR  - https://pubmed.ncbi.nlm.nih.gov/16811225/
ID  - 16811225
ER  -