@book { BokoHaramauCameroun,
    title = "Boko Haram au Cameroun",
    author = "François {Wassouni} and Adder Abel {Gwoda}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/b11645",
    url = "https://www.peterlang.com/document/1113334"
}