@book { DieHaftungdesQuasiHerstellers,
    title = "Die Haftung des Quasi-Herstellers",
    author = "Stefan {Krüger} and  {Universität Münster}",
    year = "1999",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1087263"
}