@Book{OL33640M,
    title: {Great Mysteries of the 20th Century},
    author: {Reader's Digest Association},
    publisher: {Reader's Digest},
    year: {1999},
    place: {Pleasantville, N.Y},
}

@Work{OL487272W,
    title: {De la démocratie en Amérique},
    author: {Alexis de Tocqueville and Eduardo Nolla},
    first_publish_year: {1835}
}

@Work{OL893952W,
    title: {Correspondance},
    author: {Gustave Flaubert},
    first_publish_year: {1896}
}

@Author{OL79039A,
    name: {Gustave Flaubert},
    birth_date: {12 December 1821}
    , death_date: {8 May 1880}
}