(3OhQ GdbVGA GdOSJhQj GdeUQj aj MeGjI Mbhb GdCaQGO hMQjGJge (B/ s - (3YHO GdcQje, QLH MSfs ([(3ecGf GdfTQ ZjQ eMOO(B] : s [(3GdfGTQ ZjQ eMOO(B](3, s, 2000)
(3hQO CYdi UaMI GdYfhGf (B: (3eGOI GdJOQjH GdbGfhfj dWdHI GdaQbI GdChdi(B.s
Keywords: (3GdbGfhf GdOSJhQjs; (3GdMQjGJ GdYGeIs