@book { CISGundinternationaleHandelsklauseln,
    title = "CISG und internationale Handelsklauseln",
    author = "Martin P. {Lögering}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1105224"
}