1. a With the Quality Engineering Research Group at the Universität Innsbruck, Institut für Informatik in Innsbruck. She may be reached at Ruth.Breu@uibk.ac.at
2. b With the Quality Engineering Research Group at the Universität Innsbruck, Institut für Informatik in Innsbruck. He may be reached at Klaus.Burger@uibk.ac.at
3. c With the Quality Engineering Research Group at the Universität Innsbruck, Institut für Informatik in Innsbruck. He may be reached at m.hafner@uibk.ac.at
4. d With the Software & Systems Engineering at the Technische Universität München, Institut für Informatik in München. He may be reached at Gerhard.Popp@in.tum.de