EROEI Energy Returned on Energy Invested||html|| ||EROEI|2022-6-21_15:29|Skye||https://energyskeptic.com/category/energy/eroei-energy-returned-on-energy-invested/|PDC_ANEDE#Laboratório de Engenharia Ecológica ||html|| ||Emergia EROEI Energia|2020-6-28_23:5|Skye||https://www.unicamp.br/fea/ortega/homepage.htm|PDC#