@book { DieUmweltprfunginderRegionalplanung,
    title = "Die Umweltprüfung in der Regionalplanung",
    subtitle = "Eine Handlungsanleitung",
    author = "Stephan {Mitschang} and Gerd {Schmidt-Eichstädt}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136210"
}