(3eY GdbQGf ai Gdchf (B/ s - (3eMeO LeGd GdOjf GdafOis ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1992)
Keywords: (3GdGSdGes; (3GdOjGfGJs; (3GdGYLGR GdYdei ddbQGfs; (3GdbQGfs