@Book{OL14005023M,
    title: {La divina commedia},
    author: {Dante Alighieri and John Ciardi},
    publisher: {World book company},
    year: {1921},
    place: {Yonkers-on-Hudson, N. Y},
}

@Work{OL63072W,
    title: {A Farewell to Arms},
    author: {Ernest Hemingway},
    first_publish_year: {1929}
}

@Work{OL93230W,
    title: {Paradiso},
    author: {Dante Alighieri and John Ciardi},
    first_publish_year: {1595}
}

@Author{OL29303A,
    name: {Dante Alighieri},
    birth_date: {1265}
    , death_date: {1321.}
}
@Author{OL284746A,
    name: {John Ciardi},
    birth_date: {1916}
    , death_date: {1986}
}