(3SYQ GdUQa (B:s (3hCKQg Ydj YdGL GNJdGd ejRGf GdeOahYGJ (B( (3GdJLQHI GdeUQjI aj UQa GdLfjI GdeUQj (B) /s - (3UahJ YHO GdSdGe YhV Gddgs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 2000)
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs