@misc{indiciae1691eb7872f3,
  title = {Wave envelope technique for multimode wave guide problems},
  author = {Hariharan, S. I. and Sudharsanan, S. I.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870008885},
  note = {Source identifier: 19870008885}
}