(3TOh GdQHGHI HCMhGd eLJeY GdUMGHI GdSaQ GdKGdK (B: s (3GdUMGHI hGdeLJeY (B/ s - (3YHO GdcQje, Ndjds ((3GdbGgQI (B: s (3SjfG ddfTQ, s, 1997)
Keywords: (3GdeLJeY(B. s; (3GdBOGH GdESdGejI(B. s; (3GdSjQI GdfHhjI(B. s; (3GdUMGHI(B. s