@book { SprachkontakteinZentraleuropa,
    title = "Sprachkontakte in Zentraleuropa",
    author = "Andrzej {Kątny}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1109308"
}