(3OQGSI HdGZjI ai GdSLY hGdaGUdI GdbQGfjI (B/s ((3GdbGgQI (B:s (3OGQ GdGQbe ddWHGYI hGdfTQ ,s, 1993)
Keywords: (3GddZI GdYQHjIs; (3GdHdGZI GdYQHjIs; (3GdbQGf (B- (3HdGZIs; (3GdbQGf (B- (3GYLGRs; (3GdSLYs; (3GdbQGfs