Urushadze, O., et al. ā€œCHOLANGIOSEMIOTICS OF TUMOURS OF MALIGNANT GENESIS COMPLICATED WITH OBSTRUCTIVE JAUNDICEā€. Collection of Scientific Works of Tbilisi State Medical University, vol. 49, Oct. 2019, pp. 110-3, doi:10.52340/csw.2015.49.0.110-113.