@book { Letriangleimpossible,
    title = "Le triangle impossible",
    author = "Frédéric {Dessberg}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/978-3-0352-6046-5",
    url = "https://www.peterlang.com/document/1043988"
}