@misc{indiciaee4727abe9e0a,
  title = {Wave envelope technique for multimode wave guide problems},
  author = {Hariharan, S. I. and Sudharsanan, S. I.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880043982},
  note = {Source identifier: 19880043982}
}