Saied, A., T. El Hakim, E. Emam, and K. Abdel. Naser,
""Assessment and Modeling of Carbon Monoxide Pollution Due to Traffic in Greater Cairo",
The Second International Conference on Civil Engineering ICCE II, Civil Engineering Department, Faculty of Engineering, Helwan University, April, 2000.
Saied, A., A. El-Sayed, and K. A.Nasser,
"Accident Models For Rural Roads In Egypt",
Civil Engineering Department, Faculty of Engineering, Al-Azhar University, vol. 25, issue 3, 2003.