@article {82784,
	title = {The influence of geometrical tolerances of Vickers indenter on the accuracy of measured hardness},
	journal = {International Journal of Metrology and Quality Engineering},
	volume = {Vol. 3, No 1},
	year = {2012},
	author = {El-Sherbiny M., and Hegazy R., and Ibrahim M., and Abuelezz A}
}
