Vassallo, Erasmo. “LABOUR PERFORMANCE INDEX IN THE ITALIAN LOCAL LABOUR SYSTEMS: AN ORDER-M COMPOSITE INDICATOR FROM 2006 TO 2021”. Statistica Applicata - Italian Journal of Applied Statistics (April 17, 2024). Accessed April 5, 2025. https://www.sa-ijas.org/ojs/index.php/sa-ijas/article/view/280.