TY  - RPRT
TI  - Parametric reinforcement effects in a programmed activities environment for the severely retarded.
AU  - E A Kaprowy
AU  - G R Norton
AU  - E E Melnychuk
PY  - 1986
DO  - 10.1177/01454455860101002
UR  - https://pubmed.ncbi.nlm.nih.gov/3964192/
ID  - 3964192
ER  -