SMS versenden: Proceedings of the 7th International Workshop on Middleware for Grids, Clouds and e-Science (MGC'09) : held at the ACM/IFIP/USENIX 10th Intenrational Middleware Conference, November 30-December 4, 2009, Urbana Champaign, Illinois, USA / Workshop chairs, Bruno Schulze, James Myers. [electronic resource] :