Address: Vatutina st. 53, Vladikavkaz,
362025, RNO-A, Russia
Phone: (8672)23-00-54
E-mail: rio@smath.ru
Full name: Vu Nhat Huy
Work place: Department of Mathematics, College of Science, Vietnam National University
Position: PhD
Work address: 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam
E-mail: nhat\_huy85@yahoo.com