(3GdfXQjI GdYGeI ddbGfhf (B/s - (3JfGZh, SejQ YHO GdSjOs ((3GdEScfOQjI, eUQ (B:s (3efTCI GdeYGQa,s, 1986)
(3HHdjhLQGajI (B: (3UaMI (B769-783.s
Keywords: (3GdbGfhfs -- (3adSaIs