<https://secure.gravatar.com/avatar/034ca64a38bdf32a4a0cd3b9be3409f1?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://libelula.com.pe/el-nuevo-borrador-de-negociacion-en-detalle/>