Chkhartishvili AG, Gubanov DA, Kozitsin IV. Face Mask Perception during the COVID-19 Pandemic: an Observational Study of Russian Online Social Network VKontakte. Adv Syst Sci Appl [Internet]. 2021 Oct. 1 [cited 2024 Nov. 23];21(3):91-100. Available from: https://ijassa.ipu.ru/index.php/ijassa/article/view/1124