@misc{indiciaebfdefbea5a61,
  title = {Dynamic U-tube system for solid sorbent air sampling method development.},
  author = {L W Severs and R G Melcher and M J Kocsis},
  year = {1978},
  doi = {10.1080/0002889778507764},
  url = {https://pubmed.ncbi.nlm.nih.gov/645560/},
  note = {Source identifier: 645560}
}