Alexandre Olmos, Marcos Ricardo Rosa Georges, Vinicius Eduardo Ferrari, Candido Ferreira Da Silva Filho, and Juan Arturo Castañeda-Ayarza. “Evaluating the Environmental Impact of Ethanol Fuel: Particle Number Emissions in Flex-Fuel Vehicles”. Global Journal of Human-Social Science 23, no. H6 (October 5, 2023): 51–61. Accessed May 18, 2024. https://socialscienceresearch.org/index.php/GJHSS/article/view/104005.