(3GdUMGHjGJ hCMOGK GdSjQI (B/s - (3GdTfbjWj ,eMeO MHjH Gddg eMeOs ((3LOI (B- (3GdeedcI GdYQHjI GdSYhOjI (B:s (3OGQ GdeMeOj ddfTQ hGdJhRjY ,s, 1997)
Keywords: (3GdSjQI GdfHhjIs -- (3GdUMGHjGJs -- (3SjQI GdUMGHjGJs