(NsTO WZGLQDOW NA qPONI@s (NPER(B. (NS ^E[(B.s - (NwINKELXHOFER(B,(Nq(B.s (NqNs; (NwINKELXHOFER(B,(Nw(B.s (NwLASTAs ((Nm(B.s (NnAUKAs, 1968)
Keywords: (NpUTE[ESTWIQs -- (NqPONIQs -- 20 (NW(B.s