@misc{indiciaecfe74aff4ec9,
  title = {Thermally stable polyimides from solutions of monomeric reactants},
  author = {Delvigs, P. and Lightsey, G. R. and Serafini, T. T.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710013891},
  note = {Source identifier: 19710013891}
}