@Book{OL1110841M,
    title: {Frankenstein},
    author: {Mary Shelley},
    publisher: {Dover Publications},
    year: {1994},
    place: {New York},
}

@Book{OL7354031M,
    title: {Dracula},
    author: {Bram Stoker},
    publisher: {Puffin Books},
    year: {1994},
    place: {London, UK},
}

@Author{OL31727A,
    name: {Bram Stoker},
    birth_date: {1847}
    , death_date: {1912}
}