@book { ErfolgsfaktorendesMobileMarketing,
    title = "Erfolgsfaktoren des Mobile Marketing",
    author = "Carolin {Kazantzidis}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107092"
}