Gogebashvili, Nino, et al. “THE CHANGES OF ANTIGEN REACTIVE LYMPHOCYTES AGAINST STREPTOCOCCUS DURING THE DIFFERENT FORMS OF PERIODONTITIS”. Collection of Scientific Works of Tbilisi State Medical University, vol. 53, July 2019, pp. 36-38, https://journals.4science.ge/index.php/CSW/article/view/429.