http://www.arpsura.com/index.php?option=com_content&view=article&id=58&Itemid=137

http://www.ecompany.com

http://rigo-cargue.blogspot.com

http://rigo-logistica.blogspot.com

http://web.mintransporte.gov.co/mercapeli/

http://www.youtube.com/?gl=ES&hl=es