SGEM 2015 : 15th international multidisciplinary scientific geoconference SGEM 2015, 18-24, June, 2015, Albena, Bulgaria. GeoConference on informatics, geoinformatics and remote sensing. I., Informatics, geoinformatics, photogrammetry and remote sensing. / / reviewers Aleš Čepek, Karel Pavelka . Sofia :  STEP92 Technology , 2015 . [1226] s . ISBN 978-619-7105-34-6 .