Shumskiy, A., A. Kizim, O. Pavlova, O. Gulenko, and N. Zhelonkin. “Functional Activity of Antiradical Protection Enzymes in the Oral Fluid of Patients With Peri-Implantitis With Different Types of Therapy”. Clinical Dentistry (Russia), vol. 24, no. 4, Dec. 2021, p. 80—85, doi:10.37988/1811-153X_2021_4_80.