Jankunec, Marija, et al. “The Effect of Physical Activity on Patients With Chronic Obstructive Pulmonary Disease (COPD)”. Slauga. Mokslas Ir Praktika, vol. 4, no. 5 (317), May 2023, pp. 15–19, https://doi.org/10.47458/Slauga.2023.4.15.