Khalvashi, Mzia, et al. “The Protective Effect of Maternal COVID-19 Vaccination Against Adverse Obstetric-Perinatal Outcomes and Placental Malperfusion”. Georgian Biomedical and Medical Nexus, vol. 4, no. 1, Mar. 2026, pp. 67-71, https://doi.org/10.52340/GBMN.2026.01.01.163.