(3JbjjO Gdeged hJejjR GdeTcd (B/s - (3GdLjGfj, GdMSjf Hf eMeO Hf CMeO,s 427-498 (3g`(B.s; (3GdYeQGf, Ydj Hf eMeOs; (3TeS, eMeO YRjRs ((3ecI GdecQeI (B:s (3OGQ YGde GdahGFO,s, 2000)
Keywords: (3GdCSeGA hGdcfi hGdCdbGH hGdCfSGH aj GdMOjKs