@misc{indiciaed7499010939e,
  title = {Aging effects in pyrrole.},
  author = {R H LINNELL and S UMAR},
  year = {1955},
  doi = {10.1016/0003-9861(55)90199-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/13239207/},
  note = {Source identifier: 13239207}
}