(3fXGe GdbVGA aj GdESdGe (B/s (3ef GdHMhK GdebOeI deDJeQ Gdabg GdESdGej GdPj YbOJg LGeYI GdEeGe eMeO Hf SYhO GdESdGejI HGdQjGV SfI (B1976 (3e (B/s - (3GdeQUaGhj, LeGd UGObs ((3GdQjGV (B:s (3LGeYI GdEeGe (B:s (3eDJeQ Gdabg GdESdGej,s, 1991)
Keywords: (3GdbVGA aj GdESdGes