(3fXQjI GdeUGOQI (B:s (3ai GdbGfhf GdLfGFi GdebGQf (B/s - (3Ydj aGVd MSfs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 1997)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI(B..s
(3HHdjhLQGajG (B: (3UaMGJ (B398- 407.s
(3GdfU HGddZI GdEfLdjRjI s
Keywords: (3GdeUGOQIs; (3GdbGfhf GdLfGFj(B.s