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Faycal Bouchelaghem
High School of Management Sciences
Laboratory of Analysis and Control of Differential Equations ”ACED”,
Fac. MISM, Dept. Maths, Univ 8 May 1945 GuelmaAnnaba,Guelma
Abdelouaheb Ardjouni
Department of Mathematics and Informatics,
Univ Souk Ahras,
Applied Mathematics Lab., Faculty of Sciences, Department of Mathematics,
Univ AnnabaAnnaba
Ahcene Djoudi
Applied Mathematics Lab,
Faculty of Sciences, Department of Mathematics,
Univ AnnabaAlgeria