(NzADA^I NA SOSTAWLENIE URAWNENIJ I NERAWENSTWs (NPOSOBIE DLQ U^ITELEJs - (NkIPNIS(B,(Ni(B. (Nm(B.s (NiZRAILX mIHAJLOWI^s ((Nm(B.s (NpROSWE]ENIEs, 1980)
Keywords: (NmATEMATIKAs -- (NzADA^Is