Address: Vatutina st. 53, Vladikavkaz,
362025, RNO-A, Russia
Phone: (8672)23-00-54
E-mail: rio@smath.ru
Full name: El Ouadih S.
Work place: Department of Mathematics, Faculty of Sciences Ain Chock, University Hassan II
Work address: Route d'ElJadida, Km 8, B.P. 5366 Maarif 20100 Casablanca, Morocco
E-mail: salahwadih@gmail.com