@book { TheoretischeGrundlagendesControlling,
    title = "Theoretische Grundlagen des Controlling",
    subtitle = "Strukturkriterien für die Entwicklung von Controlling-Konzeptionen",
    author = "Hermann J. {Richter}",
    year = "1987",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1076538"
}