(3QLdGf YXjeGf (B/ s - (3YHOGdLdjd MeGOs ([S.N] : (3OGQ GdcJH GdeUQjI , s, 1991)
Keywords: (3GdGWaGds; (3GdbUU GdJGQjNjIs; (3GdbUU GdYQHjI GdeJQLeIs; (3bUU GdGWaGds; (3GdbUU GdOjfjIs