Tomasz Bajwoluk. "RAILWAY TRANSPORTATION SYSTEM OF THE KRAKOW METROPOLITAN AREA - PROBLEMS AND OPPORTUNITIES." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Nano, Bio, Green and Space: Technologies for Sustainable Future (2019): 503-510. https://doi.org/10.5593/sgem2019/6.2/s27.064