@book{Woerther2010,
  author    = {Matthias W{\"o}rther},
  title     = {Bingo! : Webseiten, Konzepte, Software},
  url       = {http://www.muk.erzbistum-muenchen.de/cms/images/muk/pdf/mukpublikationen/muk48.pdf},
  year      = {2010}
}