Jindal, H., D. Faujdar, and A. Aggarwal. “Rising Public Interest of Hookah and E-Cigarettes After Tobacco Cessation Law in India: A Google Trend Analysis”. International Journal of Health Systems and Implementation Research, Vol. 3, no. 1, June 2019, pp. 56-64, https://ijhsir.ahsas-pgichd.org/index.php/ijhsir/article/view/24.