(3OhQ GdGYJHGQGJ GdYedjI aj GdbVGA GdOSJhQi (B/s (3OQGSI ebGQfI (B:s - (3jSQi eMeO GdYUGQs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1999)
. 385-399 (3HHdjhLQGajG(B: (3UaMGJs
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeMceI GdOSJhQjI GdYdjG GNJUGUGJs; (3GdbGfhf GdOSJhQis