@book { Rannjajanesobrannajaproza,
    title = "Rannjaja nesobrannaja proza",
    author = "Michail {Bulgakov}",
    year = "1978",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12797",
    url = "https://www.peterlang.com/document/1067179"
}