Zeid, I. M., G. M. Fahmy, L. M. Hassan, and A. M. E. M. Farahat,
"Effect of Fuel Oil (mazot) Combustion Products on Spinach",
Proceedings of 3rd International Conference on Biological Sciences, Tanta Univ., 28-29 April 2004. , vol. 3, pp. 482-499, 2004.
Hegazy, A. K., G. M. Fahmy, M. I. Ali, and N. H. Gomaa,
"Vegetation diversity in natural and agro-ecosystems of arid lands",
Community Ecology, vol. 5, issue 2, pp. 163-176, 2004.