<https://secure.gravatar.com/avatar/f99888168ad8efb1631fd2249e5fe377?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://radiodashkits.eu/critpto/creando-un-crecimiento-economico-repetible/>