Koleva, Ivet. “CHRONIC PAIN AND PHYSICAL ANALGESIA: THE IMPACT OF PHYSICAL MODALITIES TO REDUCE PAIN”. Journal of Biomedical and Clinical Research 1, no. 1 (July 1, 2008): 12–17. Accessed March 1, 2024. https://ojs.mu-pleven.bg/index.php/jbcr/article/view/6.