TY - CONF A1 - Mertens, K. T1 - "Do Photovoltaics make sense in countries like Germany?", Invited Paper zur 7th International Energy and Sustainability Confrerence, Cologne Institute for Renewable Energy CIRE der TH Köln, 17.05.2018, Köln Y1 - 2018 UR - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/9529 ER -