@misc{1156121,
  author = {J C Morgenstern},
  title = {Attenuation of the ground wave of a low frequency electromagnetic pulse:},
  year = {1966},
  month = {1966-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.310},
  language = {en},
}