(3Odjd GdCeQGV GdfaSjI (B: s (3CYQV h YdGL GdCeQGV GdfaSjI h GdYbdjI h GdYUHjI (B/ s - (3TQa, eMeO SYjOs ((3HjQhJ (B:s (3eDSSI YR GdOjf ddWHGYI h GdfTQ,s, 1990)
Keywords: (3GdWH GdfaSjs; (3GdYdGL GdfaSjs