Sahana AU, and Vijaya Kumar PS. “Effect of Trataka (A Yogic Cleansing Technique) on Post-Covid Cognitive Impairments in Elders ”. Journal of Ayurveda and Integrated Medical Sciences, Vol. 7, no. 7, Sept. 2022, pp. 58 -64, doi:10.21760/jaims.7.7.8.