<http://anhelm.ru/index.php?threads/%D0%A1%D0%BF%D0%B8%D1%81%D0%BE%D0%BA-kit-%D0%BD%D0%B0%D0%B1%D0%BE%D1%80%D0%BE%D0%B2.15/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://anhelm.ru/index.php?threads/%D0%A1%D0%BF%D0%B8%D1%81%D0%BE%D0%BA-kit-%D0%BD%D0%B0%D0%B1%D0%BE%D1%80%D0%BE%D0%B2.15/#post-18>