@book { MusterwandelSortenwandel,
    title = "Musterwandel – Sortenwandel",
    author = "Stefan {Hauser} and Ulla {Kleinberger} and Kersten Sven {Roth}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0668-8",
    url = "https://www.peterlang.com/document/1067532"
}