Performance Evaluation of Computer and Communication Systems. Milestones and Future Challenges IFIP WG 6.3/7.3 International Workshop, PERFORM 2010, in Honor of Günter Haring on the Occasion of His Emeritus Celebration, Vienna, Austria, October 14-16, 2010, Revised Selected Papers - Hummel, Karin Anna; Hlavacs, Helmut; Gansterer, Wilfried (Springer Berlin Heidelberg, 2011)