In this paper we introduce a new Malmquist productivity index that has three attractive features: it avoids linear programming infeasibilities under variable returns to scale, it allows for technical regress, and it does not need to be recomputed when a new time period is added to the data set....

Recent cross-country comparisons of bank efficiency have been based on pooled estimates of banks across countries and have typically assumed a common frontier and that differences in performance among banks are primarily due to disparities in certain country-specific aspects of banking...

The authors assess the performance of professional tennis players from the perspective of the efficiency of their game using data envelopment analysis (DEA). This research can complement the information provided by the Association of Tennis Professionals (ATP) ranking, which is concerned with...