@book { MobilittvonKapitalgesellschaftinEuropa,
    title = "Mobilität von Kapitalgesellschaft in Europa",
    author = "Ilka {Felzer}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836621762",
    url = "https://m.diplom.de/document/226318"
}