MOHR, A.; DANNERBECK, L.; LANGE, T. J.; PFEIFER, M.; BLAAS, S.; SALZBERGER, B.; HITZENBICHLER, F.; KOCH, M. Cardiopulmonary exercise pattern in patients with persistent dyspnoea after recovery from COVID-19. Multidisciplinary Respiratory Medicine, v. 16, 12 Feb. 2021.