@article{PopovLiperovskyLiperovskayaetal.1995,
  author    = {K. V. Popov and Viktor A. Liperovsky and E. V. Liperovskaya and Claudia-Veronika Meister},
  title     = {Weekly anthropogenic phenomena in the E- and F-layers of the ionosphere},
  year      = {1995},
}