1. Djebaili Manel ( University Abbes Laghrour, Khenchela, Algeria) Abstract
2. Youcef Elhamam Hemici ( Setif 1 University Ferhat Abbas, Setif, Algeria) Abstract
3. INES Garti ( Mohamed Khider University, Biskra, Algeria) Abstract
4. Mehamdia Abd ELhamid ( Mohamed Cherif Messaadia University, Souk Ahras, Algeria) Abstract
5. Khaoula Chabane ( University of El-Oued, El-Oued, Algeria) Abstract
6. Haroun LAMRAD (AbouBakr Belkaid University, Tlemcen, Algeria) Abstract
7. CHALEKH Randa ( University of Batna 2, Batna, Algeria) Abstract
8. BARACHE Bahia ( University A.Mira of Bejaia, Algeria)
9. BOULARES Hamza Brahim ( M'sila University, Algeria) Abstract
10. BOUKHENCHOUCHE Fatima (University of Batna 2, Batna, Algeria) Abstract
11. ZERAOULIA Elhadj (University of Tebessa, Algeria)