Avantica Agarwal, Ramdas Garg, and Vivek Kumar Shukla. “A Hospital Based Prospective Study to Assess the Role of Amniotic Fluid Index (AFI) in Postdated Pregnancy and Perinatal Outcome”. International Journal of Health and Clinical Research, vol. 5, no. 1, Jan. 2022, pp. 449-52, https://ijhcr.com/index.php/ijhcr/article/view/4536.