MBANGALA, A. M.; PERELMAN, S.; TARSIM, A. Sub Saharan Railway Firms: Reforms and Demand Effects on Technical Efficiency - A Stochastic Frontier Analysis Between 1995 and 2005. Journal of Applied Business and Economics, [S. l.], v. 22, n. 9, 2020. Disponível em: https://articlearchives.co/index.php/JABE/article/view/1055. Acesso em: 29 sep. 2025.