Business angels play an important role in financing small and medium-sized enterprises as well as generously contribute to their future development, growth and overall success. A particular and nowadays widely known disparity distinguishing business angels from other potential investors is that besides the financial support, they offer their expertise, know-how and an exclusive access to relevant networks. But how these additional resources are exercised and what actually happens after the financial investment is made? What is the level of the involvement business angel undertakes in the...