Sparber, W.W.SparberVajen, K.K.VajenHerkel, SebastianSebastianHerkelRuschenburg, JörnJörnRuschenburgThür, A.A.ThürFedrizzi, R.R.FedrizziD'Antoni, M.M.D'Antoni2022-03-112022-03-112011https://publica.fraunhofer.de/handle/publica/375286en621Overview on solar thermal plus heat pump systems and review of monitoring resultsconference paper