@book { TausendJahreRussischeOrthodoxeKirche,
    title = "Tausend Jahre Russische Orthodoxe Kirche",
    author = "Wolfgang {Kasack}",
    year = "1988",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12840",
    url = "https://www.peterlang.com/document/1067216"
}