Boszormenyi, Ladislav, Petrilak, Peter. "MATHEMATICAL DESCRIPTION OF THE SUBSYSTEMS OF THE SYSTEM HEAT PUMP, MASTERED THE BASIC MODEL." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2012 12th International Multidisciplinary Scientific GeoConference (2012): 553 - 562 pp. https://doi.org/10.5593/sgem2012/s18.v4013