@book { MariaKniginderApostel,
    title = "Maria – Königin der Apostel",
    author = "Andrzej Kazimierz {Zielinski}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1090554"
}