Lambova, Sevdalina, and Vladimira Boyadzhieva. “National Consensus for Capillaroscopy in Rheumatology”. Rheumatology (Bulgaria) 29, no. 4 (September 1, 2021): 3-14. Accessed November 12, 2025. http://www.rheumatologybg.org/journal/index.php?journal=revmatologiia&page=article&op=view&path[]=147.