(3EOGQI GdEfJGL h GdYedjGJ (B: s (3eONd cej (B/ s - (3GdJejej, MSjf YHO Gddg MSfs ((3YeGf (B:s (3OGQ GdacQ ddWHGYI hGdfTQ hGdJhRjY,s, 1997)
Keywords: (3GdEOGQIs; (3JbfjGJ GdEOGQIs; (3EOGQI GdEfJGLs