TY  - CPAPER
AU  - Ivan Kunchev
TI  - SYSTEMS APPROACH TO THE STATE LEVELLING NETWORK OF THE REPUBLIC OF BULGARIA
T2  - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Informatics, Geoinformatics and Remote Sensing
PY  - 2021
SP  - 213
EP  - 220
DO  - 10.5593/sgem2021/2.1/s09.54
PB  - STEF92 Technology
ER  -