Severini S, Tantari A, Di Tommaso G. The instability of farm income. Empirical evidences on aggregation bias and heterogeneity among farm groups. BAE [Internet]. 2016 Apr. 13 [cited 2024 May 4];5(1):63-81. Available from: https://oaj.fupress.net/index.php/bae/article/view/3286