1. Department of Applied EconomicsUniversity of Lleida Lleida Spain
2. TRM Ltd Scarborough United Kingdom
3. Department of Crop Production and Forest Sciences, Agrotecnio CenterUniversity of Lleida Lleida Spain
4. Department of Chemistry, Agrotecnio CenterUniversity of Lleida Lleida Spain
5. ICREACatalan Institute for Research and Advanced Studies Barcelona Spain