@incollection{,
	
					
					
					C5109EEB934E863A948C0A71203FB745
				,
	author={{Walid M.Raafat} and {Mohamed I.Youssef} and {Ibrahim F.Tarrad} and {Al Azhar University, Cairo}},
	journal={{Global Journal of Researches in Engineering}},
	journal={{GJRE}}2249-45960975-586110.34257/gjre,
	address={Cambridge, United States},
	publisher={Global Journals Organisation}157718
}