ET. AL., H.-H. Y. , . Research on Production Efficiency and Ownership Concentration---Taking Steel Industry and Logistics Industry as Examples. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 12, n. 11, p. 3958–3969, 2021. DOI: 10.17762/turcomat.v12i11.6519. Disponível em: https://turcomat.org/index.php/turkbilmat/article/view/6519. Acesso em: 2 may. 2024.