(3CTQGW GdSGYI GdUZQi (B- (3GdhSWi GdcHQi (B/ s - (3YHO GdefGf, YcGTIs ((3GdRQbGA (B:s (3ecJHI GdEeGe Ydj ddfTQ hGdJhRjY,s, 2003)
Keywords: (3GdEjeGf HGdjhe GdBNQs; (3GdMjGI GdBNQIs