@book { Pdagogieetthoriedelaconnaissance,
    title = "Pédagogie et théorie de la connaissance",
    subtitle = "Platon contre Piaget?",
    author = " {Alain Vergnioux}",
    year = "1991",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1078873"
}