@book { NetzGeld,
    title = "Netz-«Geld»",
    subtitle = "Funktionen des Netzgeldes insbesondere aus zivilrechtlicher Sicht",
    author = "Julian {Oberndörfer}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095710"
}