@Book{OL20026896M,
    title: {Swarabitan},
    author: {Rabindranath Tagore},
    publisher: {Viswabharati},
}

@Author{OL1770A,
    name: {Rabindranath Tagore},
    birth_date: {7 May 1861}
    , death_date: {7 August 1941}
}