@book { LaFrancelAllemagnelEurope,
    title = "La France, l’Allemagne, l’Europe",
    author = "Jean {El Gammal}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/b11253",
    url = "https://www.peterlang.com/document/1113242"
}