Ferreira, Sergio Moreno. “Efficiency of Mergers and Acquisitions by Brazilian Educational Groups Based on the Data Envelopment Analysis (DEA)”. Educação em Análise 8, no. 1 (julho 31, 2023): 288–307. Acessado maio 12, 2024. https://ojs.uel.br/revistas/uel/index.php/educanalise/article/view/47427.