@book { KreditsicherungsrechtinPolen,
    title = "Kreditsicherungsrecht in Polen",
    author = "Christian {Link}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01202-6",
    url = "https://www.peterlang.com/document/1045962"
}