@misc{indiciae115697e3b83e,
  title = {Substitution of tetramethylbenzidine for benzidine in cyanide analyses.},
  author = {K J Williams and R Rosenstein and R P Smith},
  year = {1985},
  doi = {10.1016/0009-8981(85)90025-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/3978818/},
  note = {Source identifier: 3978818}
}