@Book{OL47307592M,
    title: {A tale of two Cities},
    author: {Charles Dickens},
    publisher: {Wordsworth Classics},
    year: {1993},
    place: {Hertfordshire},
}

@Author{OL24638A,
    name: {Charles Dickens},
    birth_date: {7 February 1812}
    , death_date: {9 June 1870}
}