SolarEnergy2017
Jonas, D.; Frey, G.; Theis, D.: Simulation and Performance Analysis of Combined Parallel Solar Thermal and Ground or Air Source Heat Pump Systems. Solar Energy, ISSN 0038-092X, Vol. 150 (2017), pp. 500-511, Jul. 2017.<DOI: 10.1016/j.solener.2017.04.070>