Bertinatto, Rovian, Leandro Friedrich, Reinaldo Aparecido Bariccatti, Samuel Nelson Melegari de Souza, Flavio Gurgacz, e Felix Augusto Pazuch. 2017. “<B>Analysis of Lubricant Oil Contamination and Degradation and Wear of a Biogas-Fed Otto Cycle Engine”. Acta Scientiarum. Technology 39 (4):409-16. https://doi.org/10.4025/actascitechnol.v39i4.29458.