<https://www.usabilityblog.de/#/schema/person/f3e6176c20bc5ade274b9dbe3e69bcd6>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.usabilityblog.de/themen-im-august-2010-imagery-studie-usability-von-schiebereglern-und-landingpage-optimierung/>