@book { DieRegulierungvonInhaltenindenDienstendesInternet,
    title = "Die Regulierung von Inhalten in den Diensten des Internet",
    author = "Markus {Mairgünther}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095557"
}