The traditional econometric techniques for frontier models, namely the Stochastic Frontier Approach (SFA), the Thick Frontier Approach (TFA) and the Distribution Free Approach (DFA) have in common that they depend on a priori assumptions that are, whether feasible or not, difficult to test. This...

On the first of January 1993, the Second Banking Directive (1989) of the European Union and a number of the other EU Directives (1) related to the financial service industry were implemented. This heralded a new episode of deregulation, standardised minimum capital requirements and changes in...