@misc{indiciae443439ebbcaa,
  title = {Addition-type polyimides from solutions of monomeric reactants.},
  author = {Delvigs, P. and Serafini, T. T. and Lightsey, G. R.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720044425},
  note = {Source identifier: 19720044425}
}