@Work{OL267096W,
    title: {Anna Karenina},
    author: {Tolstoy, Leo, graf, 1828-1910},
    first_publish_year: {1876}
}

@Author{OL26783A,
    name: {Tolstoy, Leo, graf, 1828-1910},
    birth_date: {9 September 1828}
    , death_date: {20 November 1910}
}