@book { AnspruchsrelevanteVerknpfungsphnomeneimSchuldrecht,
    title = "Anspruchsrelevante Verknüpfungsphänomene im Schuldrecht",
    author = "Thomas {Oswald}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108249"
}