@book { LebendigerIslam,
    title = "Lebendiger Islam",
    author = "Katharina {Völker} and Ertuğrul {Şahin}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b17742",
    url = "https://www.peterlang.com/document/1111568"
}