(3GdMhSHI aj GdecJHGJ heQGcR GdeYdheGJ (B/s - (3GdeOGOMI, CMeO fGaY(B.s ((3YeGf, GdCQOf (B:s (3OGQ UaGA ddfTQ hGdJhRjY,s, 2011)
(3HHdjhLQGajI (B: (3U(B. 269-271.s
Keywords: (3GdecJHGJs -- (3CJeJIs; (3eQGcR GdeYdheGJs -- (3CJeJI s; (3GdagQSI GdBdjIs