(3VhGHW GdEfaGb aj GdHjJ GdeSde (B/s - (3OQhjT, NhdI YHO GdbGOQs ((3LOI (B- (3GdeedcI GdYQHjI GdSYhOjI (B:s (3OGQ GdeMeOj ddfTQ hGdJhRjY,s, 2001)
(3HHdjhLQGajI (B: (3U(B. 165-167.s
Keywords: (3GdESdGes -- (3EOGQI GdefRd GdeGdjIs; (3GdESdGes -- (3GdfabGJ GdefRdjIs; (3GdESdGes -- (3GdMjGI GdYGFdjIs; (3GdESdGes -- (3VHW GdfabGJs