(3cja jYO GdeYde GNJHGQGJg (B:s (3Odjd Yedj (B/s - (3SHGQRh, aQGfcs; (3GdTejQj, YHO GdQMef YHO Gddg aQMGfs ((3GdQjGV (B:s (3OGQ GdeYQaI ddJfejI GdHTQjI ,s, 1999)
Keywords: (3GdGeJMGfGJs; (3GdeOQShfs -- (3JOQjHs; (3GdGNJHGQGJ hGdbjGSGJ GdJYdjejIs