Productivity Drivers and Market Dynamics in the Spanish First Division Football League
Carlos Pestana Barros, Pedro Garcia-del-Barrio
Journal Of Productivity Analysis, vol. 35, 2011, p. 5-13.

Analysing the Technical Efficiency of the Spanish Football League First Division with a Random Frontier Model
Carlos Pestana Barros, Pedro Garcia-del-Barrio, Stephanie Leach
Applied Economics, vol. 41, 2009, p. 3239-3247.

Efficiency Measurement of the English Football Premier League with a Random Frontier Model
Carlos Pestana Barros, Pedro Garcia-del-Barrio
Economic Modelling, vol. 25, 2008, p. 994-1002.