@book { ImmobilienimMixedAssetPortfolio,
    title = "Immobilien im Mixed-Asset Portfolio",
    subtitle = "Eine empirische Analyse des Diversifikationspotentials von Immobilien-Aktien",
    author = "Isabelle {Jandura}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096015"
}