• SME Policy and Firms' Productivity in Latin America (with Pablo Ibarraran and Alessandro Maffioli), IZA Discussion Paper No. 4486 October 2009.
• Do temporary contracts affect Total Factor Productivity? Evidence from Spanish manufacturing firms (with Juan J. Dolado) CEPR Discussion Paper No. 7055, November 2008. IZA Discussion Paper No. 3832, November 2008. 
• Catching up in Total Factor Productivity through the Business Cycle: Evidence from Spanish Manufacturing firms (with Alvaro Escribano) Working Paper 08-51. Economic Series. Universidad Carlos III de Madrid. November 2008. 
• What determines productivity dynamics at the firm level? Evidence from Spain. MPRA Paper 6564, University Library of Munich, Germany. October 2007, Updated version coming soon.

Work in Progress

• Economic Policy and Firms' Performance.
• The demand of tourism in Panama.