Over the last few years there have been increasing concerns about the energy mix in many countries. These concerns have been of greater magnitude for countries with a common energy regulation such as European Union (EU) member states. In order to choose a given energy mix, an important aspect to...

Data Envelopment Analysis (DEA) models have been intensively used for measuring efficiency in a variety of contexts. More recently, the inclusion of undesirable outputs has extended their use to analyze relevant fields such as environmental efficiency. In this context, Slacks-Based Measure (SBM)...

This article evaluates the evolution of environmental performance in the context of the European Union (EU), over the period 1993–2010. The context is particularly relevant, due to the traditionally high concerns of the EU about these issues, which has triggered off several initiatives and...

Over the last twenty years, the Spanish banking industry has been deeply reshaped in several respects. One of the features that has allowed for it has been the geographic expansion of most savings banks, which could not enter other markets different from their natural market before 1989. Since...