Scagliarini, Michele, Mariarosaria Apreda, Ulrich Wienand, Giorgia Valpiani, and Nicola Napoli. “Exponentially Weighted Moving Average Control Schemes for Assessing Hospital Organizational Performance”. Statistica 76, no. 2 (January 1, 2016): 127–139. Accessed February 6, 2023. https://rivista-statistica.unibo.it/article/view/6320.