@Work{OL24157W,
    title: {Vailima letters},
    author: {Robert Louis Stevenson and Colvin, Sidney Sir},
    first_publish_year: {1895}
}

@Work{OL1455258W,
    title: {The letters of John Keats},
    author: {John Keats},
    first_publish_year: {1891}
}

@Author{OL153488A,
    name: {John Keats},
    birth_date: {31 October 1795}
    , death_date: {23 February 1821}
}