Tomasz Pirowski. "SIMPLE METHOD FOR INCORPORATION OF TOPOGRAPHICAL FACTOR INTO GIS-SUPPORTED MULTI-VARIANT RAIL ROUTE SELECTION." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on INFORMATICS, GEOINFORMATICS AND REMOTE SENSING (2014). https://doi.org/10.5593/sgem2014/b23/s11.107