@book { SiekmpftenfrdieHeimat,
    title = "Sie kämpften für die Heimat",
    author = "Robert {Hotz} and Konrad {Farner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069257"
}