@book { DiepositiveFunktionvonFehlerereignissen,
    title = "Die positive Funktion von Fehlerereignissen",
    author = "Reingard {Kess}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101390"
}