@book { PublicPrivatePartnershipinderInformationstechnologie, title = "Public Private Partnership in der Informationstechnologie", author = "Micha {Rosenkranz}", year = "2009", publisher = "Diplom.de", address = "Hamburg, Deutschland", doi = "10.3239/9783836627566", url = "https://m.diplom.de/document/226661" }