(3eUWai UGOb GdQGaYi (B: s (3cGJHG YQHjG heacQG GSdGejG (B/ s - (3eUWai GdTcYIs ((3GdbGgQI (B: s (3GdOGQ GdeUQjI GddHfGfjI , s, 1999)
Keywords: (3GdGOHGA GdYQHs; (3eUWai UGOb GdQGaYis; (3GdGOHGA (B- (3JQGLes