(3GdeQGLY GdJWhQGJ GdMOjKI aj CSGdjH GdNOeI GdeQLYjI hGJLGgGJgG (B/ s - (3GdeGdcj, eLHd dGRe eSdes ((3YeGf (B:s (3eDSSI GdhQGb ddfTQ,s, 2000)
Keywords: (3GdeYGQa GdYGeIs; (3GdNOeGJ GdeQLYjIs