@misc{indiciae4e523514466b,
  title = {Introduction: environmental enrichment.},
  author = {Thomas L Wolfle},
  year = {2005},
  doi = {10.1093/ilar.46.2.79},
  url = {https://pubmed.ncbi.nlm.nih.gov/15775017/},
  note = {Source identifier: 15775017}
}