Address: Vatutina st. 53, Vladikavkaz,
362025, RNO-A, Russia
Phone: (8672)23-00-54
E-mail: rio@smath.ru
Full name: Bochra Belhadji
Work place: Laboratory of Mathematics and Applied Sciences, University of Ghardaia
Position: Ph.D Student
Work address: BP 455, 47000 Ghardaia, Algeria
E-mail: bouchra.belhadji@univ-ghardaia.dz