[1]
Nazari, S., Rostamy-Malkhalifeh, M. and Hamzehee, A. 2020. An investigation of the undesirable outputs congestion in data envelopment analysis. Nexo Scientific Journal. 33, 02 (Dec. 2020), 468–475. DOI:https://doi.org/10.5377/nexo.v33i02.10785.