(3GYUGQ ef GdTQb (B: s (3LfcjR NGf (B/ s - (3KQhJ YcGTIs ((3GdbGgQI (B: s (3OGQ GdTQhb , s, 1992)
Keywords: (3JGQjNs; (3GdeZhd hGdJJGQs; (3GdJJGQs; (3GdTQb GdGbUis; (3LfcjRNGfs