@article{SchwarzerSilva2003,
  author    = {Schwarzer, Klemens and Silva, Maria Eug{\^e}nia Vieira da},
  title     = {Solar cooking system with or without heat storage for families and institutions},
  series = {Solar energy. 75 (2003), H. 1},
  journal   = {Solar energy. 75 (2003), H. 1},
  isbn      = {0038-092x},
  pages     = {34 -- 41},
  year      = {2003},
  language  = {en}
}
@article{SchwarzerSilvaFaberetal.2001,
  author    = {Schwarzer, Klemens and Silva, Maria Eug{\^e}nia Vieira da and Faber, Christian and M{\"u}ller, Christoph},
  title     = {Solar thermal desalination system with heat recovery},
  series = {Desalination. 137 (2001), H. 1-3},
  journal   = {Desalination. 137 (2001), H. 1-3},
  isbn      = {0011-9164},
  pages     = {23 -- 29},
  year      = {2001},
  language  = {en}
}