Donia, M. , Abou-Arab, A. , Sharaf, N. , Enab, A. , Mohamed, S.. "Use of Hair as an Indicator of Environmental Lead Pollution: Changes after Twenty Years of Phasing Out Leaded Gasoline". World Academy of Science, Engineering and Technology, Open Science Index 93, International Journal of Environmental and Ecological Engineering (2014), 8(9), 665 - 669.