@incollection{,
	
					
					
					C98CFA10F3167369299146B5B68D5C9A
				,
	author={{Dr. SamiBedra} and {university of Batna}},
	journal={{Global Journal of Researches in Engineering}},
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	address={Cambridge, United States},
	publisher={Global Journals Organisation}1210914
}

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}