Priyanka Majumder, Suman Das, Rakhal Das, and Binod Chandra Tripathy, “Identification of the Most Significant Risk Factor of COVID-19 in Economy Using Cosine Similarity Measure under SVPNS-Environment”, Neutrosophic Sets Syst., vol. 46, pp. 112–127, Nov. 2021, Accessed: Jul. 17, 2024. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/4143