The author(s) of this article has(ve) requested that it be retracted from publication
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