Vanya Petrova. UPDATING TOPOGRAPHIC MAPS AND ORTHOPHOTOPLANS BY DIGITAL PHOTOGRAMMETRY USING AERIAL AND SATELLITE IMAGERY. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on INFORMATICS, GEOINFORMATICS AND REMOTE SENSING, 2013. https://doi.org/10.5593/sgem2013/bb2.v2/s10.022