Andrey N. Kokoulin. "DEVELOPMENT OF HIERARCHICAL DISTRIBUTED GIS SYSTEM." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Informatics, Geoinformatics and Remote Sensing (2019): 833-840. https://doi.org/10.5593/sgem2019/2.1/s08.108