Voss, KarstenKarstenVossStahl, W.W.StahlGoetzberger, AdolfAdolfGoetzberger2022-03-032022-03-031994https://publica.fraunhofer.de/handle/publica/18523810.2749/101686694780650977en621697624The self-sufficient solar house Freiburg: a building supplies itself with energyjournal article