Franceschini, M., A. Rampello, F. Bovolenta, A. Marino, P. Tzani, and A. Chetta. “ Exertional Dyspnoea and Fatigue in Individuals With Multiple Sclerosis Not Requiring Assistive Devices”. Journal of Rehabilitation Medicine, vol. 42, no. 8, Aug. 2010, pp. 719-23, doi:10.2340/16501977-0600.