(3HQfGeL GSJNOGe GdKbGaI aj GdJYdje (B:s (3OQhS JYdjejI JdaRjI ehLgI ddeYdejf h GdWdGH (B/s ((3JhfS (B:s (3GdefXeI GdYQHjI ddJQHjI h GdKbGaI h GdYdhe ,s, 1987)
Keywords: (3GdJQHjIs; (3GdJYdje s; (3HQfGeLs