@book { DieBilanzierungimmateriellenVermgensnachHGBundIFRS, title = "Die Bilanzierung immateriellen Vermögens nach HGB und IFRS", author = "Holger {Roth}", year = "2009", publisher = "Diplom.de", address = "Hamburg, Deutschland", doi = "10.3239/9783836625487", url = "https://m.diplom.de/document/226515" }