@book { TextsortenbedingterAspektTempusGebrauchimRussischen,
    title = "Textsortenbedingter Aspekt-Tempus-Gebrauch im Russischen",
    author = "Daniela {Appel}",
    year = "1996",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12406",
    url = "https://www.peterlang.com/document/1066887"
}