@book { UntersuchungenzumAusdruckdesAnfangsimPolnischen,
    title = "Untersuchungen zum Ausdruck des Anfangs im Polnischen",
    author = "Gertje {Krumbholz}",
    year = "2015",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b11881",
    url = "https://www.peterlang.com/document/1056218"
}