@misc{indiciaeafec4622ae84,
  title = {How to maximize reward rate on two variable-interval paradigms.},
  author = {A I Houston and J McNamara},
  year = {1981},
  doi = {10.1901/jeab.1981.35-367},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812223/},
  note = {Source identifier: 16812223}
}