(3CQHGY NQGSGf GdTgjQI (B: s (3OQGSI aj CMhGdgG GdLZQGajI h GdEOGQjI h GdEbJUGOjI MJi fgGjI GdbQf GdQGHY ddgLQI (B/ s - (3GdMOjKj, bMWGf YHO GdSJGQs ((3GdHUQI (B:s (3hRGQI GdJYdje GdYGdj h GdHMK GdYdej (B- (3LGeYI GdHUQI,s, 1990)
Keywords: (3BSjG GdhSWis; (3GdJGQjNs; (3GdHdOGf GdESdGejIs