(3ebGWY ef SjQI dHfi (B: s (3EP Cf GdQMjd eLehYI NUhUjI (B/ s ((3GdEeGQGJ (B: s (3OGFQI GdKbGaI hGdEYdGe , s, 2001)
Keywords: (3GdSjQI GdPGJjI, GdcJGHI GdfShjI, GdJLQHI GdPGJjIs