M. Rahn, P. Sanders, and J. Singler. 26th IEEE International Conference on Data Engineering, March 1-6, 2010, Long Beach, California, USA, page 685-688. IEEE Computer Society, (März 2010)
C. Kim, S. Yoon, and D. Kim. ACC'08: Proceedings of the WSEAS International Conference on Applied Computing Conference, page 120--123. Stevens Point, Wisconsin, USA, World Scientific and Engineering Academy and Society (WSEAS), (2008)