@book { AreallinguistikundSprachtypologieimOstseeraum,
    title = "Areallinguistik und Sprachtypologie im Ostseeraum",
    author = "Andrea-Eva {Ewels}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106474"
}