@book { WarenbewirtschaftungssystemeimWarenhaus,
    title = "Warenbewirtschaftungssysteme im Warenhaus",
    author = "Martin {Sturzenegger}",
    year = "1975",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069619"
}