Hamel, FlorianFlorianHamelHerz, Thomas PhilippThomas PhilippHerzUebernickel, FalkFalkUebernickelBrenner, WalterWalterBrenner2025-03-252025-03-252011https://knowledge.hpi.de/handle/123456789/23738ARRAY(0x5627fe53ce60)Management of IT Costs and Performance in Business Groups: Analysis of Unaddressed Requirementsinproceedings