HENDRAWAN, R.; PERMANA, G. T.; NUGROHO, K. W. Efficiency analysis of telecommunications companies in Southeast Asia using Stochastic Frontier Analysis (SFA) method. Jurnal Siasat Bisnis, [S. l.], v. 23, n. 2, p. 104–112, 2019. DOI: 10.20885/jsb.vol23.iss2.art3. Disponível em: https://journal.uii.ac.id/JSB/article/view/12076. Acesso em: 28 mar. 2024.