01204naa a2200157 a 450000100080000000500110000800800410001910000170006024501110007726000090018852006980019765300300089565300240092565300190094977300780096816574582010-07-08       2008    bl uuuu     u00u1 u    #d1 aGOMES, E. G.  aModelling undesirable outputs with zero sum gains data envelopment analysis models.h[electronic resource]  c2008  aData envelopment analysis (DEA) literature has proposed alternative models for performance assessment in the presence of undesirable outputs, such as pollutant emissions, where increased outputs imply reduced performance. However, the case where global equilibrium of outputs should be imposed has not yet been considered. We propose that the zero sum gains DEA (ZSG-DEA) models look especially suitable for treating equilibrium models, where the sum of the quantities produced by all decision-making units can be set as the upper admissible bound. This paper uses ZSG-DEA models to evaluate the carbon dioxide emission case study, which can be considered part of the Kyoto Protocol statement.  aData envelopment analysis  aUndesirable outputs  aZero sum gains  tJournal of the Operational Research Societygv.59, n.2, p. 616-623, 2008.