20200206094200.0 Proceedings of the European SCGIS Conference. Proceedings of the European SCGIS Conference. 1314-7749 Proceedings of the European SCGIS Conference Proceedings of the European SCGIS Conference http://www.proc.scgis.scgisbg.eu/ Bulgaria 1314-7749 1314-7749 1314-7749 1314-7749