@book { DasSystemderrussischenKollektivsymbolik,
    title = "Das System der russischen Kollektivsymbolik",
    author = "Michael {Fleischer}",
    year = "1997",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12246",
    url = "https://www.peterlang.com/document/1066769"
}