RENKEN, Folker. Fuel Consumption Reduction By Use Of Hybrid Drive Systems. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 2, p. 181–186, 2015. DOI: 10.17770/etr2011vol2.999. Disponível em: https://journals23.rta.lv/index.php/ETR/article/view/999.. Acesso em: 10 dec. 2024.