(3GdJWhQ hGdJLOjO ai GdTYQ GdeUQi GdMOjK (B/ s - (3YHOGdeMSf Wg HOQs ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1991)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3GdYUQ GdMOjKs; (3eUQs; (3JGQjN hfbOs