TY  - RPRT
TI  - Timeout and concurrent fixed-ratio schedules with human subjects.
AU  - S Striefel
PY  - 1972
DO  - 10.1901/jeab.1972.17-213
UR  - https://pubmed.ncbi.nlm.nih.gov/16811583/
ID  - 16811583
ER  -