@book { TheGermanOccupationofBelgium19401944,
    title = "The German Occupation of Belgium 1940-1944",
    author = "Werner {Warmbrunn}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/978-1-4539-0997-3",
    url = "https://www.peterlang.com/document/1054371"
}