References — further reading

● http://schema.org/

● https://www.youtube.com/watch?v=A-kX0Aut-18

● https://github.com/joomla/joomla-cms/blob/master/libraries/joomla/microdata/

● http://magazine.joomla.org/issues/issue-oct-2013/item/1551-what-about-microdata-rich-snippets-in-joomla

● http://magazine.joomla.org/issues/issue-july-2013/item/1362-joomla-microdata-semantics-and-accessibility