@book { Discoursetsystme,
    title = "Discours et système",
    author = "Albin {Wagener}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/b15747",
    url = "https://www.peterlang.com/document/1113640"
}