TY  - RPRT
TI  - REINFORCEMENT AS INPUT: CYCLIC VARIABLE-INTERVAL SCHEDULE.
AU  - J E STADDON
PY  - 1964
DO  - 10.1126/science.145.3630.410
UR  - https://pubmed.ncbi.nlm.nih.gov/14172609/
ID  - 14172609
ER  -