TY - CPAPER AU - Larisa Ofelia Filip TI - SPECIAL TOPOGRAPHIC WORKS IN THE RAMP OF A VERTICAL SHAFT T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Informatics, Geoinformatics and Remote Sensing PY - 2019 SP - 327 EP - 332 DO - 10.5593/sgem2019/2.2/s09.040 PB - STEF92 Technology ER -