@misc{indiciaecac2d7082df3,
  title = {First VHF auroral radar interferometer observations},
  author = {Providakes, J. F. and Swartz, W. E. and Farley, D. T. and Fejer, B. G.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830051478},
  note = {Source identifier: 19830051478}
}