@inproceedings{sgem2020s05078,
  title = {LOCAL TIME DEPENDENCE OF THE IONOSPHERIC RESPONSE TO GEOMAGNETIC DISTURBANCES OVER BULGARIA},
  author = {Rumiana Bojilova and Plamen Mukhtarov},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Science and Technologies in Geology, Exploration And Mining},
  year = {2020},
  pages = {615-622},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2020/1.2/s05.078}
}