(3bUI h JGQjN GdMVGQGJ GdYQHjI Hjf GdGeS h Gdjhe (B: s (3Ghd ehShYI ef fhYgG MOjKI h HGdGdhGf JYGdL fTGI GdHdOGf GdYQHjI hGMOGKgG MJi GjGefG gPg (B/ s - (3GOjJhcQHS GdOhdjIs ((3HjQhJ (B: s (3GOjJhcQHS GdOhdjI , s, 1999)
Keywords: (3GdJGQjNs; (3OhGFQ GdeYGQa GdYQHjIs; (3GdHdGO GdYQHjIs