AL-KLOUB, Bashar. Survey Of Productivity Measurement Techniques And Application To Five Major Natural Resources Industries In Jordan. Al-Balqa Journal for Research and Studies, [S. l.], v. 5, n. 1, p. 61–84, 1997. Disponível em: https://ajrs.ammanu.edu.jo/ojs/index.php/albalqajournal/article/view/503.. Acesso em: 11 oct. 2026.