POPA, M.; PISANIUC, M. Matrix Hard - The Impact of Technological, Economic and Social Indicators on Productivity and Competitiveness. International Journal of Applied Research in Management and Economics, [S. l.], v. 3, n. 4, p. 37–44, 2020. DOI: 10.33422/ijarme.v3i4.509. Disponível em: https://www.dpublication.com/journal/IJARME/article/view/509. Acesso em: 12 oct. 2025.