@misc{indiciae38756bc32987,
  title = {Simple apparatus for roll tubes.},
  author = {M L Snyder},
  year = {1968},
  doi = {10.1128/am.16.9.1417-.1968},
  url = {https://pubmed.ncbi.nlm.nih.gov/4877665/},
  note = {Source identifier: 4877665}
}