(3HOGjGJ Yde GdfaS GdMOjK(B:s - (3Chfjd, h(B.(3e(B.s; (3TGcQ YHO GdMejOs; (3GdYGfj, YGgO MSfjs ((3HZOGOs (3OGQ GdTDhf GdKbGajI GdYGeIs, 1987)