@book { BranchenrotationalsAnlagestil,
    title = "Branchenrotation als Anlagestil",
    author = "Steffen {Hlava}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836616348",
    url = "https://m.diplom.de/document/225967"
}