Larisa Ofelia Filip. "SPECIAL TOPOGRAPHIC WORKS IN THE RAMP OF A VERTICAL SHAFT." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Informatics, Geoinformatics and Remote Sensing (2019): 327-332. https://doi.org/10.5593/sgem2019/2.2/s09.040