(3GdYdGbGJ GdOhdjI (B/ s - (3fYeg , cGXe gGTe s ((3HZOGO (B: s (3hRGQI GdJYdje GdYGdj hGdHMK GdYdej , s, 1987)
Keywords: (3GdYdGbGJ GdNGQLjI s -- (3bGfhf Ohdj s