@misc{indiciaeff0856943acc,
  title = {ESCA surface characterization of four IUPAC reference polymers.},
  author = {B D Ratner and D Leach-Scampavia and D G Castner},
  year = {1993},
  doi = {10.1016/0142-9612(93)90229-u},
  url = {https://pubmed.ncbi.nlm.nih.gov/8435459/},
  note = {Source identifier: 8435459}
}