@book { JeanKobs19121981,
    title = "Jean Kobs (1912–1981)",
    author = "Laurent {Fels}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6270-4",
    url = "https://www.peterlang.com/document/1053681"
}