(3GdUfGYGJ GdcjejGFjI GdJLGQjI (B: s (3GdCUHZg h GdUHGZg (B- (3WHGYI GdefShLGJ (B/ s - (3OQhjT, YHO GdcQjes ((3OeTb (B:s (3OGQ GdeYQag,s, 1992)
Keywords: (3GdUHGZgs; (3WHGYI GdefShLGJs; (3JLgjR GdefShLGJs