Omar, W. A., and M. M. Hassan, "Environmental assessment of a floodplain exposed to ‎pollution at Taif Governorate, Kingdom of Saudi ‎Arabia", Bioscience Research, vol. 15, issue 4, pp. 3606-3618, 2018. bioscience_research.pdf
Omar, W. A., and H. M. Mahmoud, "Risk assessment of polychlorinated biphenyls (PCBs) and trace metals in River Nile up- and downstream of a densely populated area", Environmental Geochemistry and Health, vol. 39, pp. 125-137, 2017.
Omar, W. A., and H. M. Mahmoud, "Risk assessment of polycyclic aromatic hydrocarbons (PAHs) in River Nile up- ‎and downstream of a densely populated area.‎", Journal of Environmental Science and Health, Part A: Toxic/Hazardous ‎Substances and Environmental Engineering, vol. 52, issue 2, pp. 166-173, 2017.
Omar, W. A., H. S. Gaber, H. H. Abd-Elrahman, and S. Abo-Hegab, "Remediation of copper toxic effects using Spirulina platensis as supplement in ‎diet of Nile tilapia; Oreochromis niloticus", Jökull Journal‎, vol. 67, issue 11, pp. 87-102, 2017.
Omar, W. A., M. A. Busaadia, and M. - A. S. Marie, "Genotoxic effects and risk assessment of metal pollution in mullet; Mugil ‎cephalus along the north eastern Mediterranean coast of Libya", Jökull Journal‎, vol. 67, issue 9, pp. 86-105, 2017.
Saleh, Y. S., W. A. Omar, and M. - S. A. Marie, Comparative Ecotoxicological Studies to Assess Marine Ecosystem Health, , Germany, Lap Lambert Academic Publishing, 2016.
El-Shazly, M. M., W. A. Omar, Y. A. Edmardash, M. S. Ibrahim, E. I. Elzayat, I. I. A. El-Sebeay, K. M. Abdel Rahman, and M. M. Soliman, "Area reduction and trace element pollution in Nile Delta wetland ecosystems", African Journal of Ecology, vol. 55, issue 4, pp. 391-401, 2016.
El-Shazly, M. M., E. M. I. Elzayat, W. A. Omar, I. I. A. El-Sebeay, Y. A. Edmardash, M. M. Soliman, K. M. Abdel Rahman, and M. S. Ibrahim, "Water cytotoxicity and dioxins bioaccumulation in an Egyptian Delta wetland ecosystem", African Journal of Aquatic Science, vol. 41, issue 3, pp. 289-296, 2016.
Omar, W. A., Y. S. Saleh, and M. - A. S. Marie, "The use of biotic and abiotic components of coastal marine areas as indicators of ecosystem health", Ecotoxicology, vol. 25, pp. 253–266, 2016.
Omar, W. A., Y. S. Saleh, and M. - A. S. Marie, "Integrating multiple fish biomarkers and risk assessment as indicators of metal pollution along the Red Sea coast of Hodeida, Yemen Republic", Ecotoxicology and Environmental Safety, vol. 110, pp. 221-231, 2014.