@misc{indiciaed6ae1ba58fbe,
  title = {Rigid format alter packets for the analysis of electromagnetic field problems},
  author = {Spreeuw, E. and Reefman, R. J. B.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750023446},
  note = {Source identifier: 19750023446}
}