Authors
Abdelmalik Keddi
Laboratory of Stochastic Models, Statistic and Applications, Dr. Moulay Tahar University of Saida, Algeria
Fethi Madani
Laboratory of Stochastic Models, Statistic and Applications, Dr. Moulay Tahar University of Saida, Algeria
Amina Angelika Bouchentouf
Laboratory of Mathematics, Djillali Liabes University of Sidi Bel Abbes, Algeria
