@Author{OL19441A,
    name: {Joseph Conrad},
    birth_date: {3 December 1857}
    , death_date: {3 August 1924}
}
@Author{OL18236A,
    name: {Alexandre Dumas},
    birth_date: {1802}
    , death_date: {1870}
}
@Author{OL24638A,
    name: {Charles Dickens},
    birth_date: {7 February 1812}
    , death_date: {9 June 1870}
}