(3JYdje GdJacjQ (B:s (3eaGgje hJWHjbGJ (B/s - (3LQhGf, aJMj YHO GdQMefs ((3GdYjf (B- (3GdEeGQGJ GdYQHjI GdeJMOI (B:s (3OGQ GdcJGH GdLGeYj,s, 1999)
(3HHdjhLQGajI (B: (3U(B. 407-413.s
Keywords: (3GdJacjQs -- (3OQGSI hJYdjes; (3GdJYdjes -- (3adSaIs; (3GdPGcQIs