Khalil, E. E., A. E. Eldegwy, S. M. Morcos, and A. S. Sabry,  "CFD Investigation for Minimizing the Contaminant Concentrations in the Air-Conditioned Surgical Operating Theatres",  Proceedings of ICFD11,  Eleventh International Conference of Fluid Dynamics, , Paper ICFD11-EG-4108 ,, Alexandria, December, 2013.