Author: Nauchno-prakticheskai︠a︡ konferent︠s︡ii︠a︡ aspirantov i magistrantov, posvi︠a︡shchennai︠a︡ 50-letii︠u︡ obrazovanii︠a︡ Vostochno-Kazakhstanskogo gosudarstvennogo universiteta (4th 2002? Ȯskemen, Kazakhstan?)