(Np)QÆSNQ @NOSTÆ (B/s)E - (NtITARENKO(B, (Nd(B. (Nw(B.s ((NdN)QÆPROPETROWSXK (B:s)E (NoBL(B. (NWID(B-(NWO(B,s, 1958)
Keywords: (NhUDOVNQ L)QÆTERATURAs)E -- (NuKRA)QÇNSXKAs)E -- (NpOEZ)QÆQ(B.s)E