حيرش نور الدين; وزقير محمد2. The impact of the epidemic of Covid 19 on sports employment contracts. Human Resources Development Research, [S. l.], v. 17, n. 01, p. 91–69, 2026. Disponível em: https://rdrh.univ-setif2.dz/index.php/rdrh/article/view/148. Acesso em: 2 nov. 2026.