Fedrizzi, Marco, Giulio Sperandio, Mirko Guerrieri, Mauro Pagano, Corrado Costa, Daniele Puri, Roberto Fanigliulo, and Paolo Bazzoffi. 2015. “Economic Competitiveness Gap Related to the Application of the GAEC Standards of Cross-Compliance on Farms: Evaluation Methodology”. Italian Journal of Agronomy 10 (s1). https://doi.org/10.4081/ija.2015.696.