TY  - RPRT
TI  - APERIODICITY AS A FACTOR IN CHOICE.
AU  - R J HERRNSTEIN
PY  - 1964
DO  - 10.1901/jeab.1964.7-179
UR  - https://pubmed.ncbi.nlm.nih.gov/14130099/
ID  - 14130099
ER  -