João Victor Machado UNICAMP   205 Imbituba São Paulo, São Paulo 03132-090 Brasil   joao.vmachado.economia@gmail.com   https://www.linkedin.com/in/jo%C3%A3o-victor-machado-phd-71a12082/           JEL Areas: G3 : Corporate Finance and Governance: General Q3 : Nonrenewable Resources and Conservation: General