@book { DieVlkerrechtspersnlichkeitderEuropischenUnion,
    title = "Die Völkerrechtspersönlichkeit der Europäischen Union",
    author = "Michael M. {Pachinger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096144"
}