@book { DieRussischeOrthodoxeKircheinderGegenwart,
    title = "Die Russische Orthodoxe Kirche in der Gegenwart",
    author = "Wolfgang {Kasack}",
    year = "1979",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12801",
    url = "https://www.peterlang.com/document/1067182"
}