@book { LesdroitssociauxetleprocessusdeconstitutionnalisationdelUnionEuropenne,
    title = "Les droits sociaux et le processus de constitutionnalisation de l'Union Européenne",
    author = "Ismail Hakki {Musa}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18198",
    url = "https://www.peterlang.com/document/1056335"
}