<https://www.concretedecor.net/decorativeconcretearticles/vol-12-no-8-novdec-2012/mike-denny-artistic-concrete-surfaces-olathe-kan/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.concretedecor.net/departments/stamping-texturing-concrete/mike-denny-artistic-concrete-surfaces-olathe-kan/>