TY  - RPRT
TI  - Human fixed-interval performance with concurrently programmed schedules: A parametric analysis.
AU  - R Poppen
PY  - 1982
DO  - 10.1901/jeab.1982.37-251
UR  - https://pubmed.ncbi.nlm.nih.gov/16812268/
ID  - 16812268
ER  -