(3GdQGOjh h GdJdaRjhf h GdajOjh (B: s (3YQHj eY GdJYGQja (B- (3EfLdjRjI (B- (3aQfSj (B- (3CdeGfj (B/ s - (3HOQGf, HOQGf eMeOs ((3GdbGgQg (B:s (3eDSSI GdCgQGe,s, 1980)
Keywords: (3GdJdaRjhfs; (3GdQGOjhs; (3GdeYGLes; (3GdgfOSI GdCdcJQhfjIs