@Work{OL531767W,
    title: {The Canterbury Tales},
    author: {Geoffrey Chaucer and John E. Cunningham},
    first_publish_year: {1478}
}

@Author{OL37436A,
    name: {Geoffrey Chaucer},
    birth_date: {1343}
    , death_date: {25 October 1400}
}
@Author{OL2222460A,
    name: {John E. Cunningham},
    birth_date: {1927}
}