@book { DielauterkeitsrechtlicheImpressumspflichtinVertriebssystemen,
    title = "Die lauterkeitsrechtliche Impressumspflicht in Vertriebssystemen",
    author = "Cynthia {Staiger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b19080",
    url = "https://www.peterlang.com/document/1152578"
}