@book { AuergerichtlicheStreitbeilegunginDeutschland,
    title = "Außergerichtliche Streitbeilegung in Deutschland",
    author = "Gerald {Zimmer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091974"
}