@book { LaobradeJorgeSemprn,
    title = "La obra de Jorge Semprún",
    subtitle = "Claves de interpretación- Vol. 1: Autobiografía y novela",
    author = "Jaime {Céspedes}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0441-7",
    url = "https://www.peterlang.com/document/1052759"
}