@misc{indiciae440834f01108,
  title = {The separation-adaptation response to temporary object loss.},
  author = {K van Leeuwen and S L Pomer},
  year = {1969},
  doi = {10.1016/s0002-7138(09)62251-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/5384504/},
  note = {Source identifier: 5384504}
}