(3HWdGf GdbHV Ydi GdeJge (B:s (3OQGSI YedjI Ydi VhA Gdabg hbVGA GdfbV (B/s - (3YHOGdMce ahOg (B.s ((3GdbGgQI (B:s (3OGQ GdacQ GdLGeYi (B,s, 1997)
Keywords: (3GdbGfhf GdLfGFi(B.s