@article{ljs23001,
 author={O. Oji, J. and H. Sunday, P. and M. Petinrin, O. and R. Adetunji, A.},
 year={2013},
 title={Taguchi Optimization of Process Parameters on the Hardness and Impact Energy of Aluminium Alloy Sand Castings},
 journal={Leonardo J. Sci.},
 volume={12},
 number={23},
 pages={1-12},
 url={http://ljs.academicdirect.org/A23/001_012.pdf}
}