(3eNJGQGJ ef QhGFY GdfKQ GdYQHj GdbOje (B: s "(3OQGSI hJMdjd(B" / s - (3YHO GdQMef, MSjf QGVjs ((3YeGf (B:s (3OGQ GdHjQb ddWHGYI h GdfTQ h GdJhRjY,s, 1992)
Keywords: (3GdCOH GdYQHjs; (3GdfKQ GdYQHjs