(3TQW GdeUdMI aj OYhi GdEdZGA haj GdOYhi GdOSJhQjI (B: s (3OQGSI ebGQfI (B/s - (3jSQj eMeO GdYUGQs ((3GdbGgQI (B: s (3OGQ GdfgVI GdYQHjI, s, 1994)
128-122 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdbGfhf GdEOGQjs; (3OYhj GdEdZGAs