@book { NaguibMahfuznovelistauniversal,
    title = "Naguib Mahfuz, novelista universal",
    author = "Saad {Mohamed Saad-Helal}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b20841",
    url = "https://www.peterlang.com/document/1336331"
}