(3GdadSaI hbVGjG GdYUQs (3GdLRA GdKGfis - (3HhQQ,Lhf(B.(3Qs; (3ejdJhf LhdO jfLQs ((3GdgjFI GdeUQjI GdYGeI ddcJGHs, 1990)
Keywords: (3adSaIs