CLEMENTI, L.; MARUOTTI, A. Efficiency indicators versus forntier methods: an empirical investigation of italian public hospitals. Statistica, [S. l.], v. 67, n. 3, p. 263–279, 2007. DOI: 10.6092/issn.1973-2201/3509. Disponível em: https://rivista-statistica.unibo.it/article/view/3509. Acesso em: 19 may. 2022.