Address: Vatutina st. 53, Vladikavkaz,
362025, RNO-A, Russia
Phone: (8672)23-00-54
E-mail: rio@smath.ru
Full name: Danchev Peter V.
Work place: Plovdiv State University "Paissii Hilendarski"
Position: Professor
Work address: 24 Tzar Assen Street, 4000 Plovdiv, Bulgaria
E-mail: pvdanchev@yahoo.com