@Book{OL24375842M,
    title: {Confessions},
    author: {Augustine of Hippo},
    publisher: {Penguin Books},
    year: {1961},
    place: {Harmondsworth, Middlesex, England},
}

@Book{OL3702864M,
    title: {The last days of Socrates},
    author: {Πλάτων},
    publisher: {Penguin Books},
    year: {2003},
    place: {London},
}

@Author{OL12823A,
    name: {Πλάτων},
    birth_date: {428/427 BC}
    , death_date: {348/347 BC}
}