TY - CPAPER AU - Olga Vshivkova AU - Igor Kalugi TI - EFFECTIVE ACCOUNTING FOR VERTICAL REFRACTION IN EDM LEVELING T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Informatics, Geoinformatics and Remote Sensing PY - 2021 SP - 451 EP - 458 DO - 10.5593/sgem2021/2.1/s09.56 PB - STEF92 Technology ER -