ZINEB, A. .; ZINEB, F. .; ISMAEL, E. O. .; IKRAM, M. Effects of COVID-19 on Population, Economic Growth, Logistics Performance, and Quality Management in Africa: Grey Relational Analysis. International Journal of Grey Systems, [S. l.], v. 2, n. 2, p. 18–33, 2022. DOI: 10.52812/ijgs.56. Disponível em: http://publish.thescienceinsight.com/index.php/ijgs/article/view/56. Acesso em: 28 apr. 2024.