(3GdUhJ GdGNQ (B: s (3GdLhgQ GdMhGQj ddNWGH GdGOHj (B/ s - (3KGeQ , aGVd s ((3HZOGO (B: s (3OGQ GdTDhf GdKbGajI GdYGeI , s, 1992)
Keywords: (3GdGOH GdYQHj s -- (3JGQjN hfbO s