(NpOWY[ENIE \FFEKTIWNOSTI NOWYH WIDOW TQGI (B/ s - (Nu[AKOW(B, (NsERAFIM sERGEEWI^(B. s ((NmOSKWA (B: s (NtRANSVELDORIZDAT(B, s, 1959)
Keywords: (NtEPLOWOZNAQ TQGA (B- (N|FFEKTIWNOSTXs; (N|LEKTRI^ESKAQ TQGA (B((NV(B.-(ND(B.) - (N|FFEKTIWNOSTXs