@book { SpracheundPolitikDieBalkanspracheninVergangenheitundGegenwart,
    title = "Sprache und Politik. Die Balkansprachen in Vergangenheit und Gegenwart",
    author = "Helmut {Schaller} and Kyrill {Haralampieff} and Wolfgang {Gesemann}",
    year = "1980",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12868",
    url = "https://www.peterlang.com/document/1067241"
}