Zhabborova, U., and A. S. Inoyatov. “Mechanisms of Local Immunity of The Oral Mucosa in Coronavirus Infection”. Central Asian Journal of Medical and Natural Science, Vol. 2, no. 3, June 2021, pp. 330-4, https://cajmns.centralasianstudies.org/index.php/CAJMNS/article/view/224.