@Book{OL7117594M,
    title: {Nil darpan, or, The indigo planting mirror},
    author: {Mitra, Dinabandhu},
    publisher: {C.H. Manuel},
    year: {1861},
    place: {Calcutta},
}

@Author{OL9946A,
    name: {Mitra, Dinabandhu},
    birth_date: {1829}
    , death_date: {1874}
}