@book { PreisregulierungaufFestnetzmrkten,
    title = "Preisregulierung auf Festnetzmärkten",
    author = "Wolfgang {Briglauer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136283"
}