(3CeQGV GdYUQ (B: s (3GdCeQGV GdfaSjI h GdYbdjI h GdSjchSheGJjI (B/ s - (3GdYjShj, YHO GdQMefs ((3GdEScfOQjg (B:s (3OGQ GdeYQaI GdLGeYjI,s, 1990)
Keywords: (3GdCeQGVs