Tavares, Maria Elizabete, et al. “Behavior of Lung Function in Patients With Chronic Obstructive Pulmonary Disease Inserted into a Pulmonary Rehabilitation Program”. Journal of Respiratory and CardioVascular Physical Therapy, vol. 3, no. 2, June 2016, pp. 40-46, https://periodicos.ufrn.br/revistadefisioterapia/article/view/8231.