data envelopment analysis data envelopment analysis

Porter PK (1991). “The Productive Efficiency of US Milk Processing Co-Operatives.” J Agricultural Economics 42(2): 161-173.

Portela MCAS, E Thanassoulis and G Simpson (2004). “Negative Data in DEA: A Directional Distance Approach Applied to Bank Branches.” JORS 55(10): 1111-1121.

Portela MCAS and E Thanassoulis (2007). “Developing a Decomposable Measure of Profit Efficiency Using DEA.” J the Operational Research Society.

Portela MCAS and E Thanassoulis (2007). “Comparative Efficiency Analysis of Portuguese Bank Branches.” EJOR 177(2): 1275-1288.

Portela MCAS and E Thanassoulis (2006). “Zero Weights and Non-Zero Slacks: Different Solutions to the Same Problem.” Ann Oper Res 145: 129-147.

Portela MCAS and E Thanassoulis (2005). “Profitability of a Sample of Portuguese Bank Branches and its Decomposition into Technical and Allocative Components.” EJOR 162(3): 850-866.

Portela MCAS and E Thanassoulis (2004). “Malmquist Indexes Using a Geometric Distance Function (GDF).” in Emrouznejad A and V Podinovski (eds.) Proceedings of DEA2004, Birmingham, UK: 229.

Portela MCAS and E Thanassoulis (2001). “Decomposing School and School-Type Efficiency.” EJOR 132(2): 357-373.

Portela MCAS, PC Borges and E Thanassoulis (2003). “Finding Closest Targets in Non-Oriented DEA Models: the Case of Convex and Non-Convex Technologies.” JPA 19(2-3): 251-269.

Portela MCAS, PC Borges and E Thanassoulis (2002). “Finding Closest Targets in Non-Oriented DEA Models: the Case of Convex and Non-Convex Technologies.” in Emrouznejad A, R Green and V Krivonozhko (eds.) Efficiency and Productivity Analysis in the 21st Century, International Research in Management Science.