IVAN, Ionut Cristian. Efficiency frontier on Japanese banking system. Ekonomia Międzynarodowa (International Economics), [S. l.], n. 12, p. 235–249, 2015. DOI: 10.18778/2082-4440.12.03. Disponível em: https://czasopisma.uni.lodz.pl/em/article/view/19948. Acesso em: 22 jul. 2024.