(3OjhGf Uaj GdOjf GdMdj (B/s - (3Uaj GdOjf GdMdj, YHO GdYRjR Hf SQGjG Hf Ydj,s 677-750 (3g`(B.s; (3GdWHGY, YeQ aGQhbs ((3HjQhJ (B:s (3OGQ GdCQbe Hf CHj GdCQbe,s, 1997)
Keywords: (3GdTYQ GdYQHjs -- (3GdCfOdSs