D. Menasce, J. Sousa, S. Malek, and H. Gomaa. Proceedings of the 7th international conference on Autonomic computing, page 195--204. New York, NY, USA, ACM, (2010)
X. Jia, S. Ying, H. Cao, and D. Xie. Sixth International Conference on Grid and Cooperative Computing, 2007. GCC 2007, page 96--103. IEEE, (August 2007)