Volume 8, Issue 4, October 2014, Pages 1581–1588




Ahmed Faize1, El Mehdi Stouti2, Taoufik Ragani3, and Salma Gaou4
1 Faculty of sciences, Abdelmalek Esaadi University, Tetuan, Morocco
2 LIROSA Laboratory, Faculty of sciences, Abdelmalek Esaâdi University, Tetuan, Morocco
3 LaSC Laboratory, Faculty of sciences, Abdelmalek Esaâdi University, Tetuan, Morocco
4 LIROSA Laboratory, Faculty of sciences, Abdelmalek Esaâdi University, Tetuan, Morocco