@book { PluricentricLanguagesandNonDominantVarietiesWorldwide,
    title = "Pluricentric Languages and Non-Dominant Varieties Worldwide",
    author = "Rudolf {Muhr}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-07112-2",
    url = "https://www.peterlang.com/document/1050736"
}