@misc{1153911,
  author = {J Ralph Johler},
  title = {Low- and very low-radiofrequency tables of ground wave parameters for the spherical earth theory ::the roots of Riccati's differential equation},
  year = {1959},
  month = {1959-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.7},
  language = {en},
}