Nikolay Miloshev, Petya Trifonova, Ivan Georgiev (2020). IMPORTANCE OF THE NATIONAL GEOINFORMATION CENTER FOR NATURAL AND ANTHROPOGENIC RISKS PREVENTION IN BULGARIA. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Science and Technologies in Geology, Exploration And Mining, 583-590. https://doi.org/10.5593/sgem2020/1.2/s05.074