@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}
}
@book{SchwarzerMueller2003,
  author    = {Schwarzer, Klemens and M{\"u}ller, C.},
  title     = {Entwicklung und Optimierung einer Geb{\"a}udeheizung f{\"u}r den Einsatz in Hochgebirgsregionen mit hoher solarer Einstrahlung : Abschlussbericht},
  publisher = {Solar-Institut Juelich, Fachhochschule Aachen},
  address   = {J{\"u}lich},
  pages     = {118 S.},
  year      = {2003},
  language  = {de}
}