(3ef GaJQGAGJ GdeSJTQbjf Ydi GdCUhd GdYbOjI aj GdESdGe (B:s (3YQV hfbO (B/s - (3aDGO, YHO GdefYes ((3GdQjGV (B- (3GdeedcI GdYQHjI GdSYhOjI (B:s (3ecJHI GdYHjcGf ,s, 2001)
(3HHdjhLQGajI (B: (3UaMI (B277-280.s
Keywords: (3GdESdGe hGdGSJTQGb hGdeSJTQbhfs; (3OaGY Yf GdYbjOIs; (3GdESdGes -- (3OaY eWGYfs; (3QO THgGJs