Ján Kačúr. PULSE-WIDTH MODULATION CONTROL OF EXPERIMENTAL BELL FURNACE. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Informatics, Geoinformatics and Remote Sensing, 2018, pp. 649-656. https://doi.org/10.5593/sgem2018/2.1/s07.083