@book { Stalking,
    title = "Stalking",
    subtitle = "Eine strafrechtswissenschaftliche Untersuchung",
    author = "Lidia {Mumm}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101461"
}