Kusnir, Marek, Vranayova, Zuzana, Kapalo, Peter. "USING OF TRANSFORMED SOLAR ENERGY BY PHOTOVOLTIC SYSTEM TO POWER THE HEAT PUMP." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2012 12th International Multidisciplinary Scientific GeoConference (2012): 631 - 638 pp. https://doi.org/10.5593/sgem2012/s18.v4023