ZHANG, Litao. Matrix used in Input and Output Analysis. Transactions on Economics, Business and Management Research, [S. l.], v. 14, p. 93–101, 2024. DOI: 10.62051/sjt0bj24. Disponível em: https://wepub.org/index.php/TEBMR/article/view/4324. Acesso em: 19 apr. 2026.