@misc{indiciae70a3790e4033,
  title = {Response rates--an evolution.},
  author = {E Poplin and L Baker},
  year = {1994},
  doi = {10.1007/bf00686046},
  url = {https://pubmed.ncbi.nlm.nih.gov/8033304/},
  note = {Source identifier: 8033304}
}