@misc{indiciae39427802dab4,
  title = {Pharmaceuticals. Tracking down an unidentified trace level constituent.},
  author = {J L Hopkins and K A Cohen and F W Hatch and T P Pitner and J M Stevenson and F K Hess},
  year = {1987},
  doi = {10.1021/ac00138a002},
  url = {https://pubmed.ncbi.nlm.nih.gov/3619039/},
  note = {Source identifier: 3619039}
}