@book { KorrelationenvonRisikenimProgrammundProjektportfoliomanagement,
    title = "Korrelationen von Risiken im Programm- und Projektportfoliomanagement",
    author = "Franz {Fischer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097506"
}