@article{Mertens2016,
  author    = {K. Mertens},
  title     = {Photovoltaik - Solarstrom vom eigenen Dach: Lohnt sich das noch?},
  journal   = {VDI Ingenieur forum},
  volume    = {H 45620},
  number    = {3},
  pages     = {42 -- 47},
  year      = {2016},
}