http://www.treehugger.com/corporate-responsibility/oil-and-gas-exploration-threatens-peruvian-amazon.html
http://blogs.ft.com/beyond-brics/2013/09/30/andean-oil-pacific-rubiales-snaps-up-petrominerales/#axzz2yOHeEWs4
http://www.as-coa.org/sites/default/files/ASCOA_Energy_in_Peru.pdf
http://www.pbs.org/wnet/extremeoil/journey/ecuador2.html
http://www.yachana.org/teaching/students/webpages/nativesp99/environment/andeanregion.html.