@book { SemantischeUntersuchungenzumVerbalaspektimRussischen,
    title = "Semantische Untersuchungen zum Verbalaspekt im Russischen",
    author = "Walter {Breu}",
    year = "1980",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12458",
    url = "https://www.peterlang.com/document/1066929"
}