@book { KultursponsoringalsInstrumentdesstrategischenMarketing,
    title = "Kultursponsoring als Instrument des strategischen Marketing",
    author = "Alexander {Opaschowski}",
    year = "1997",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832402174",
    url = "https://m.diplom.de/document/216164"
}