by I︠U︡. I. Merzli︠a︡kov, Novosibirskiĭ gosudarstvennyĭ universitet im. Leninskogo komsomola, Vsesoi︠u︡znai︠a︡ nauchnai︠a︡ studencheskai︠a︡ konferent︠s︡ii︠a︡ "Student i nauchno-tekhnicheskiĭ progress" (14th 1976 Novosibirskiĭ gosudarstvennyĭ universitet)