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https://ec.europa.eu/digital-single-market/en/news/proposal-directive-european-parliament-and-council-accessibility-public-sector-bodies-websites
. Accessed 05 Mar 2016
3. United Nations, Convention on the Rights of Persons with Disabilities.
http://www.un.org/disabilities/convention/conventionfull.shtml
. Accessed 05 Mar 2016
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http://dysgraphia.org.uk
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https://www.w3.org/2002/Talks/0104-usabilityprocess/slide3-0.html
. Accessed 10 Apr 2016