@book { DieNeuregelungdesInternationalenVerbrauchervertragsrechtsinArt29aEGBGB,
    title = "Die Neuregelung des Internationalen Verbrauchervertragsrechts in Art. 29a EGBGB",
    author = "Klaus {Bitterich}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095213"
}