ZHU, Z. Hypothesis On the Positive U Curve Relationship Between Unemployment Rate and Productivity. International Journal of Management and Education in Human Development, [S. l.], v. 2, n. 01, p. 178–181, 2022. Disponível em: https://ijmehd.com/index.php/ijmehd/article/view/69. Acesso em: 4 may. 2024.