(3GdGYeGd GdcGedI (B50 (3bUjOI ef GdTYQ GdGeQjci GdeYGUQ (B/ s - (3Jhajb UGjZs ([S.N] : (3QjGV GdQjS ddcJH hGdfTQ , s, 1990)
Keywords: (3GdTYQ GdGeQjcis; (3GdGOH GdGeQjci GdeJQLes