NAZARI, Soodabeh; ROSTAMY-MALKHALIFEH, Mohsen; HAMZEHEE, Ali. An investigation of the undesirable outputs congestion in data envelopment analysis. Nexo Revista Científica, [S. l.], v. 33, n. 02, p. 468–475, 2020. DOI: 10.5377/nexo.v33i02.10785. Disponível em: https://camjol.info/index.php/NEXO/article/view/10785. Acesso em: 14 apr. 2025.