@book { RobertSchumanAptredelEurope19531963,
    title = "Robert Schuman – Apôtre de l’Europe (1953-1963)",
    author = "Marie-Thérèse {Bitsch} and  {Maison de Robert Schuman}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1135340"
}