Hadad, Muliaman; Hall, Maximilian; Kenjegalieva, Karligash - In: Applied Financial Economics 21 (2011) 12, pp. 847-861
In this study, we utilize a nonparametric efficiency measurement approach which combines the Semi-Oriented Radial Measure-Data Envelopment Analysis (SORM-DEA) approach for dealing with negative data (Emrouznejad et al., 2010) with the Slacks-Based Efficiency Measures (SBM) of Tone (2001, 2002)...
