Seidl, . Michal. "IMPROVED PROJ.4 GRID FILES FOR REGION OF CZECH REPUBLIC." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Informatics, Geoinformatics and Remote Sensing (2016): 369-374. https://doi.org/10.5593/sgem2016/b22/s09.047