“A Predictive Study of the Severity of Covid 19 Symptoms According to Neutrosophic Logic”. JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences 30, no. 1 (March 31, 2022): 180–191. Accessed January 19, 2026. https://mail.journalofbabylon.com/index.php/JUBPAS/article/view/4132.