@book { WrterVerbindungen,
    title = "Wörter – Verbindungen",
    author = "Ulrich {Breuer} and Irma {Hyvärinen}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100952"
}