@book { DerGrundsatzderumgekehrtenMageblichkeit,
    title = "Der Grundsatz der umgekehrten Maßgeblichkeit",
    author = "Thomas C. {Sittel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094145"
}