M. Casado, M. Freedman, J. Pettit, J. Luo, N. McKeown, and S. Shenker. Proceedings of the 2007 conference on Applications, technologies,
architectures, and protocols for computer communications, page 1--12. New York, NY, USA, ACM, (2007)
R. Pettit, and H. Gomaa. WICSA '04: Proceedings of the Fourth Working IEEE/IFIP Conference on Software Architecture (WICSA'04), page 57. Washington, DC, USA, IEEE Computer Society, (2004)