@article{aggour_eltehiwy_salem_2008, 
  title={Improvement Concrete Barriers to Resist Pentration of Missiles}, 
  DOI={10.21608/iccae.2008.45491}, 
  publisher={Egypts Presidential Specialized Council for Education and Scientific Research}, 
  author={Aggour, Ahmed and Eltehiwy, Essam and Salem, Hesham}, 
  year={2008}, 
  month={May}
  }