Saveleva, N. “Nitrogen Oxide As the Factor Initiating and Keeping Development of Inflammation in Parodonta Fabrics at Patients With the Chronic Generalized Periodontitis, Severity Level I-II in Combination With Parasitosis ”. Experimental and Clinical Medicine, Vol. 69, no. 4, Aug. 2020, pp. 151-3, https://ecm.knmu.edu.ua/article/view/633.