HEIDARI, Hanif; RAMEZANI, Rohollah; JAMALI, Ali. Efficiency Analysis of Multi-Stage Systems in the Presence of Undesirable Outputs. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 18, n. 1, p. 206–218, 2016. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/1320. Acesso em: 5 nov. 2025.