(3GdeYQaI aj GdESdGe (B:s (3eUGOQgG heLGdGJgG (B/s - (3GdbQfj, YHO Gddg Hf eMeOs ((3ecI GdecQeI (B:s (3OGQ YGde GdahGFO ddfTQ h GdJhRjY,s, 1999)
(3HHdjhLQGajI (B: (3U(B. 573-591.s
Keywords: (3GdESdGe hGdeYQaIs