@book { RundfunkgebhrenfinanzierungunterdemGATS,
    title = "Rundfunkgebührenfinanzierung unter dem GATS",
    author = "Hans-Martin {Schmidt}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104948"
}