@book { ZurGeschichtedesSchriftrussischen,
    title = "Zur Geschichte des Schriftrussischen",
    author = "Anna {Kretschmer}",
    year = "1998",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12456",
    url = "https://www.peterlang.com/document/1066927"
}