@misc{indiciae495d85a14b74,
  title = {Parametric reinforcement effects in a programmed activities environment for the severely retarded.},
  author = {E A Kaprowy and G R Norton and E E Melnychuk},
  year = {1986},
  doi = {10.1177/01454455860101002},
  url = {https://pubmed.ncbi.nlm.nih.gov/3964192/},
  note = {Source identifier: 3964192}
}