I also carry out numerous collaborations with companies and institutions, often in the form of contracts with the Office for the Transfer of Research Results of the University of Zaragoza. My research work has dealt with the impact of the International Exhibition of Zaragoza (Expo 2008), activities related to Defence, Torre-Village, soft drink producers, ZEPA areas, wind energy, electricity transmission and distribution networks, the underground economy or the growth of the Aragonese economy.