@book { AchtErwachungen,
    title = "Acht Erwachungen",
    author = "Katja {Huber}",
    year = "2013",
    publisher = "hey! publishing",
    address = "München, Deutschland",
    doi = "10.3239/9783956070112",
    url = "https://www.heypublishing.com/document/266326"
}