(3GeJfGY GdbGVi Yf GdbVGA HYdeI GdTNUi ai bGfhf GdeQGaYGJ (B/ s - (3fHjd GSeGYjd YeQs ([S.N] : (3efTGI GdeYGQa GdGSdGejI , s, 1989)
Keywords: (3GdbGfhfs; (3bGfhf GdeQGaYGJs; (3GdbVGIs