Fik , V.B., R.P. Krynytskyi, and O.V. Dudok. “Pathomorphological Changes in Periodontal Tissues under Experimental Chronic Opioid Exposure”. Морфологія / Morphologia / Morfologìâ 19, no. 2 (July 30, 2025): 54–58. Accessed April 22, 2026. https://morphology.dma.edu.ua/article/view/338434.