Nyers Jozsef M (2016) COP and Economic Analysis of the Heat Recovery from Waste Water using Heat Pumps, Acta Polytechnica Hungarica, vol. 13, br. 5, str. 135-154 (Article) Nyers Jozsef M,Garbai Laszlo,Nyers Arpad J (2015) A modified mathematical model of heat pump's condenser for analytical optimization, ENERGY, vol. 80, br. , str. 706-714 (Article) Nyers Jozsef M,Kajtar Laszlo,Tomic Slavica A,Nyers Arpad J (2015) Investment-savings method for energy-economic optimization of external wall thermal insulation thickness, ENERGY AND BUILDINGS, vol. 86, br. , str. 268-274 (Article) Nyers Jozsef M,Pek Zoltan (2014) Mathematical Model of Heat Pumps' Coaxial Evaporator with Distributed Parameters, ACTA POLYTECHNICA HUNGARICA, vol. 11, br. 10, str. 41-57 (Article) Nyers Jozsef M,Tomic Slavica A,Nyers Arpad J (2014) Economic Optimum of Thermal Insulating Layer for External Wall of Brick, ACTA POLYTECHNICA HUNGARICA, vol. 11, br. 7, str. 209-222 (Article) Nyers Jozsef M,Garbai Laszlo,Nyers Arpad J (2014) Analysis of Heat Pump Condenser's Performance using the Mathematical Model and a Numerical Method, ACTA POLYTECHNICA HUNGARICA, vol. 11, br. 3, str. 138-151 (Article) Nyers Jozsef M,Nyers Arpad J (2014) Investigation of Heat Pump Condenser Performance in Heating Process of Buildings using a Steady-State Mathematical Model, ENERGY AND BUILDINGS, vol. 75, br. , str. 523-530 (Article)