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)