@book { DerpolnischeAphorismus,
    title = "Der polnische Aphorismus",
    author = "Peter {Krupka}",
    year = "1976",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12283",
    url = "https://www.peterlang.com/document/1066802"
}