@book { GeschichtederAppendizitis,
    title = "Geschichte der Appendizitis",
    author = "Mali {Kallenberger}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b15651",
    url = "https://www.peterlang.com/document/1111069"
}