(3UhQ ef ShQ GdbQBf GdcQje (B/ s - (3GdMeUj, YHO GdcQjes ([(3ZjQ eYQa(B] : s [(3ZjQ eYQa(B](3, s, 1990)
Keywords: (3GdbQBf GdcQje(B. s; (3ShQ GdbQBf(B. s; (3CdaGX GdbQBf(B. s; (3JaSjQ GdbQBf(B. s