@article{lejpt18017,
 author={R. Bello A. Onilude, S. a. M.},
 year={2011},
 title={Force Relations and Dynamics of Cutting Knife in a Vertical Disc Mobile Wood Chipper},
 journal={Leonardo Electron. J. Pract. Technol.},
 volume={10},
 number={18},
 pages={17-34},
 url={http://lejpt.academicdirect.org/A18/017_034.pdf}
}