Kafi, A., Daneshian, B., Rostamy-Malkhalifeh, M. and Rostamy-Malkhalifeh, M. 2020. Forecast of the efficiency confidence interval of decision-making units in data envelopment analysis. Nexo Scientific Journal. 33, 02 (Dec. 2020), 431–445. DOI:https://doi.org/10.5377/nexo.v33i02.10782.