@book { DasBilddesbulgarischenMittelaltersinderneubulgarischenErzhlliteratur,
    title = "Das Bild des bulgarischen Mittelalters in der neubulgarischen Erzählliteratur",
    author = "Detlef {Kulman}",
    year = "1968",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12172",
    url = "https://www.peterlang.com/document/1066683"
}