HACINI, MOHAMMED EL MAHDI, Department of Mathematics, université djillali,liabes, sidi bel abbes,22000, Algeria.
Hadi, Sarra, University of Setif 1, 19000 Setif, Algeria
Hadj Ammar, Tedjani, Department of Mathematics, University of El-Oued, Algeria
Hammouche, Hadda, Laboratory of Mathematics And Applied Sciences University of Ghardaia, 47000. Algeria.
Hazzam, Nadia Nadia, Laboratoire de Mathématiques Fondamentales et Numériques. UFA Sétif 1. Sétif. Algérie.

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