@book { Fundamentalontologie,
    title = "Fundamentalontologie",
    author = "Andreas {Lehr} and Friderun {Fein} and Hubert {Fein} and Leo {Naab} and Stephan {Schwartz}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093215"
}