@book { BulletinderdeutschenSlavistik2015Jahrgang212015,
    title = "Bulletin der deutschen Slavistik 2015. Jahrgang 21, 2015",
    author = "Sebastian {Kempgen} and Ludger {Udolph}",
    year = "2015",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12075",
    url = "https://www.peterlang.com/document/1067651"
}