Vargas, Sedenir Antonio de, Osmar Antonio Bonzanini, and Alzenir José de Vargas. “Environmental Economics in Social and Environmental Projects: Disclosure of Investments by Petrobras Company in the Year 2012”. Revista Eletrônica em Gestão, Educação e Tecnologia Ambiental 19 (August 23, 2015): 27–38. Accessed January 18, 2025. https://periodicos.ufsm.br/reget/article/view/19183.