About the Authors

Nadia BARJE

Department of Mathematics, Faculté des Sciences, Université Chouaib Doukkali, Morocco

Farid BARJE

Department of Biology, Faculté des Sciences Semlalia, Université Cadi Ayyad, Morocco

Mohamed EL AALLAOUI

Department of Mathematics, Faculté des Sciences, Université Chouaib Doukkali, Morocco

Asmae KAMAL

Department of Mathematics, Faculty of Sciences, Moulay Ismail, Morocco

Corresponding Author

Email: nbarje@yahoo.fr