@misc{indiciae57a1f0ca9b94,
  title = {A sensitive thin-layer chromatographic technique for determining morphine in urine.},
  author = {J E Wallace and J D Biggs and J H Merritt and H E Hamilton and K Blum},
  year = {1972},
  doi = {10.1016/s0021-9673(01)85697-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/5056241/},
  note = {Source identifier: 5056241}
}