Costantino, C., and D. Romiti. “Effectiveness of Back School Program Versus Hydrotherapy in Elderly Patients With Chronic Non-Specific Low Back Pain: A Randomized Clinical Trial”. Acta Biomedica Atenei Parmensis, vol. 85, no. 3S, June 2014, pp. 52-61, https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/3703.