@Book{OL24601510M,
    title: {Anna Karenina},
    author: {Лев Толстой},
    publisher: {G. W. Jacobs},
    year: {1919},
    place: {Philadelphia},
}

@Author{OL26783A,
    name: {Лев Толстой},
    birth_date: {9 September 1828}
    , death_date: {20 November 1910}
}