@book { DasGroteskeinMichailBulgakovsProsa,
    title = "Das Groteske in Michail Bulgakovs Prosa",
    author = "Volker {Levin}",
    year = "1975",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12765",
    url = "https://www.peterlang.com/document/1067159"
}