“Estimating the Overcharge of the Liquefied Petroleum Gas Cartel in Brazil’s Federal District:: Evidence from Before-and-After and Difference-in-Differences Approaches”. Revista de Defesa da Concorrência 13, no. 2 (dezembro 10, 2025). Acesso em dezembro 13, 2025. https://revista.cade.gov.br/index.php/revistadedefesadaconcorrencia/article/view/1955.