Dudka, T. V., and O. S. Huhlina. 2014. “ Ursodeoxycholic Acid and Nucleinate Efficiency in Patients With Chronic Obstructive Pulmonary Disease With Accompanying Chronic Non-Stone Cholecystitis”. Medicni Perspektivi 19 (4):43-49. https://doi.org/10.26641/2307-0404.2014.4.35593.