(NmATEMATIKA W EKONOMIKEs (NU^EBNIKs (N^(B. 1s - (NsOLODOWNIKOW a(B. (Ns(B.s; (NbABAJCEW w(B.(Na(B.s; (NbRAILOW a(B.(Nw(B.s ((Nm(B.s (NfINANSY I STATISTIKAs, 2000)