@misc{indiciaee73a4b2e61cf,
  title = {Polyimides containing oxyethylene units. Part 4: Polymerization of dianhydrides containing ether linkages},
  author = {Harris, F. W. and Karnavas, A. J. and Das, S. and Cucuras, C. N. and Hergenrother, P. M.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870002458},
  note = {Source identifier: 19870002458}
}