@book { DieTheologenBruderschafteninGriechenland,
    title = "Die Theologen-Bruderschaften in Griechenland",
    author = "Angelos {Giannakopoulos}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1088567"
}