SGEM SGEM 2017. 17th International Multidisciplinary Scientific GeoConference. Volume 17. Informatics, Geoinformatics and Remote Sensing : conference proceedings. Albena, Bulgaria, 29 June - 5 July 2017 Issue 21 Informatics, Geoinformatics. -- 1. vyd. -- Sofia : STEF 92 Technology, 2017. -- 1148 s. -- ISBN : 978-619-7408-01-0. -- ISSN : 1314-2704.