@book { DerNacherfllungsanspruchnachUNKaufrecht,
    title = "Der Nacherfüllungsanspruch nach UN-Kaufrecht",
    author = "Emilio {Maus Ratz}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101383"
}