NKOHLA, T.; SIMATELE, M.; MARWA, N.; NCWADI, R. . A non-parametric assessment of efficiency of South African public universities. South African Journal of Higher Education, [S. l.], v. 35, n. 2, p. 158–187, 2021. DOI: 10.20853/35-2-3950. Disponível em: https://www.journals.ac.za/sajhe/article/view/3950. Acesso em: 7 oct. 2025.