@misc{indiciaef36cc60d28ee,
  title = {Fourth derivative spectra.},
  author = {W L Butler},
  year = {1979},
  doi = {10.1016/0076-6879(79)56048-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/459882/},
  note = {Source identifier: 459882}
}