1. Mahdi, K., Jammal, L., Safar, M.: Characterizing Collaborative Social Networks Using Cyclic Entropy, Case Study: Wikipedia. In: IADIS International Conference on Web Based Communities, pp. 125–130. Inderscience Publishers, Algarve (2009)
2. Safar, M., Farahat, H., Mahdi, K.: Analysis of Dynamic Social Network: E-mail Messages Exchange Network. In: 11th International Conference on Information Integration and Web-based Applications & Services (iiWAS), pp. 41–48. ACM, Kuala Lumpur Malaysia (2009)
3. Mahdi, K., Safar, M., Farahat, H.: Analysis of Temporal Evolution of Social Networks. J. Mobile Multimedia 5(4), 333–350 (2009)
4. Mahdi, K., Safar, M., Sorkhoh, I.: Entropy of Robust Social Networks. In: IADIS International e-Society Conference, iadis, Algarve, Portugal (2008)
5. Safar, M., Farahat, H., Kassem, A.: Approximate Cycles Count in Undirected Graphs. J. DIM