(3SjQI MjGJi (B/ s - (3YHOGdQMef HOhis ((3HjQhJ (B: s (3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQ , s, 2000)
Keywords: (3GdJQGLe GdPGJjIs; (3YHOGdQMef HOhis; (3GdadGSaI GdeUQjhfs