@misc{indiciae57a6760f7355,
  title = {Three-dimensional modelling in magnetotelluric and magnetic variational sounding},
  author = {Reddy, I. K. and Phillips, R. J. and Rankin, D.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780032314},
  note = {Source identifier: 19780032314}
}