@book { DecisionSupportfrbarrierefreieWebprsenz,
    title = "Decision Support für barrierefreie Webpräsenz",
    author = "Valeska {Heerdt}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099155"
}