@book { GriechischEllinikaGrekiska,
    title = "Griechisch – «Ellinika»– Grekiska",
    author = "Konstantina {Glykioti} and Doris {Kinne}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107097"
}