@misc{indiciae60b12130e814,
  title = {Bisphenol A polycarbonate as a reference material},
  author = {Hilado, C. J. and Cumming, H. J. and Williams, J. B.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770067781},
  note = {Source identifier: 19770067781}
}