@book { ZumProblemderKategoriederPersonimRussischen,
    title = "Zum Problem der Kategorie der Person im Russischen",
    author = "Una {Winter}",
    year = "1987",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12679",
    url = "https://www.peterlang.com/document/1067095"
}