@misc{indiciaee77d38870096,
  title = {Safe periods both explain and need explaining.},
  author = {M Sidman},
  year = {2001},
  doi = {10.1901/jeab.2001.75-335},
  url = {https://pubmed.ncbi.nlm.nih.gov/11453622/},
  note = {Source identifier: 11453622}
}