@inproceedings{sgem2021s05104,
  title = {ULTRA-LOW FREQUENCY GEOMAGNETIC PULSATIONS OBSERVED AT MID LATITUDES IN PANAGJURISTE, BULGARIA},
  author = {Maria Chamati and B. Andonov},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Science and Technologies in Geology, Exploration And Mining},
  year = {2021},
  pages = {587-594},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2021/1.1/s05.104}
}