(NsWQZX I OBOSOBLENNOSTXs - (NpARN@K(B,(Nm(B. (Na(B.s (NmIHAIL aLEKSEEWI^s ((Nk(B.s (NnAUKOWA DUMKAs, 1988)
Keywords: (NsWQZX (B((NFILOS(B.)s