S. Moosavi, {. Seyyedi, and N. Moghadam. Information Technology: New Generations, 2009. ITNG '09. Sixth International Conference on, page 290--295. (April 2009)
P. Mohagheghi, and J. Aagedal. MISE '07: Proceedings of the International Workshop on Modeling in Software Engineering, page 6--11. Washington, DC, USA, IEEE Computer Society, (2007)