(3af GdYdGbGJ GdYGeI h GdEYdGe (B/s - (3EeGe, GHQGgjes ((3GdbGgQI (B:s (3ecJHI GdCfLdhGdeUQjI ,s, 1986)
(3HjHdjhZQGajG(B:(3U(B.351-353s
Keywords: (3GdUMGaIs; (3GdYdGbGJ GdYGeIs; (3GdEYdGes