TY - CPAPER AU - Maria Chamati AU - B. Andonov TI - ULTRA-LOW FREQUENCY GEOMAGNETIC PULSATIONS OBSERVED AT MID LATITUDES IN PANAGJURISTE, BULGARIA T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Science and Technologies in Geology, Exploration And Mining PY - 2021 SP - 587 EP - 594 DO - 10.5593/sgem2021/1.1/s05.104 PB - STEF92 Technology ER -