@article{lejpt14011,
 author={M. Abdullahi, M.},
 year={2009},
 title={Evaluation of Causes of Retaining Wall Failure},
 journal={Leonardo Electron. J. Pract. Technol.},
 volume={8},
 number={14},
 pages={11-18},
 url={http://lejpt.academicdirect.org/A14/011_018.pdf}
}