@book { UntersuchungenzumaltrussischenAkzent,
    title = "Untersuchungen zum altrussischen Akzent",
    subtitle = "Anhand von Kirchengesangshandschriften",
    author = "Margarete {Ditterich}",
    year = "1975",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12502",
    url = "https://www.peterlang.com/document/1066966"
}