(NgRAF mONTE(B-(NkRISTO (B:s (Nw (B2 (NT(B. /s - (Nd@MA(B, (NaLEKSANDRs; (NoLAWSKAQ(B, (Nl(B.s; (NsTROEW(B, (Nw(B.s; (NtRESKUNOW(B, (Nm(B.(Ns(B.s ((NmOSKWA (B:s (NpRAWDA(B,s, 1990)
(Nt(B. 1 (1990, 702 (NS(B.: (NIL(B.)s (Nt(B. 2 (1990, 637 (NS(B.: (NIL(B.)s
Keywords: 9