@article{lejpt19039,
 author={Nassar, A. E. and Nassar, E. E.},
 year={2011},
 title={Design and Fabrication of a Wear Testing Machine},
 journal={Leonardo Electron. J. Pract. Technol.},
 volume={10},
 number={19},
 pages={39-48},
 url={http://lejpt.academicdirect.org/A19/039_048.pdf}
}