Norkienė I., d’Espiney R., and Martin-Lazaro J. F. “Effectiveness of High-Flow Nasal Oxygen Therapy in Management of Acute Hypoxemic and Hypercapnic Respiratory Failure”. Acta Medica Lituanica, Vol. 26, no. 1, May 2019, pp. 46-50, doi:10.6001/actamedica.v26i1.3955.