@book { DerKonzernimKompetenzrechtderEuGVVO,
    title = "Der Konzern im Kompetenzrecht der EuGVVO",
    author = "Samy {Sakka}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16160",
    url = "https://www.peterlang.com/document/1058249"
}