@book { DieSanierungdesUnternehmensinderInsolvenz,
    title = "Die Sanierung des Unternehmens in der Insolvenz",
    author = "Anton {Vasilev}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/225117"
}