TY  - RPRT
TI  - Choice between single and multiple reinforcers in concurrent-chains schedules.
AU  - James E Mazur
PY  - 2006
DO  - 10.1901/jeab.2006.94-05
UR  - https://pubmed.ncbi.nlm.nih.gov/17002228/
ID  - 17002228
ER  -