TY  - RPRT
TI  - Variation, repetition, and choice.
AU  - Josele Abreu-Rodrigues
AU  - Kennon A Lattal
AU  - Cristiano V dos Santos
AU  - Ricardo A Matos
PY  - 2005
DO  - 10.1901/jeab.2005.33-03
UR  - https://pubmed.ncbi.nlm.nih.gov/15828592/
ID  - 15828592
ER  -