(3GdCYGQI aj GdecJHGJ (B: s ((3efgL h JWHjb fXGe(B) / s - (3GdYfGShI, eMeO Ydjs ((3YeGf (B: s (3OGQ GdVjGA, s, 1998)
Keywords: (3GdeYGQa GdYGeI(B.s; (3NOeGJ GdCYGQI(B.s; (3GdCYGQGJ GdOGNdjI(B.s; (3Mbhb GdCYGQI GdYGeI(B.s; (3CJeJI GdecJHGJ(B.s