1. 1. Galvanism syndrome and chronic inflammatory processes (ed. by I. D. Ponyakina). M.: Lenand, 2014, 402 p.
2. 2. Lebedev K.A., Mitronin A.V., Ponyakina I.D. Hypersensitivity to denture materials. M.: Lenand, 2010, 208 p.
3. 3. Lebedenko I.Yu., Titov Yu.F., Anisimov S.V. Investigation of Nickel intake into human saliva from dental alloys. Hygiene and sanitation. 1981, No. 6: 77—78.
4. 4. Butenko O.G., Topolnitsky O.Z., Romodanovsky P.O. Adverse outcomes in dental care. Stomatology for All / Int. Dental Review.. 2019; No 3(88): 22—24. doi:10.35556/idr-2019-3(88).
5. 5. Ivanova A.F. Influence of metal inclusions in the oral cavity on the General state of the body. Stomatology / "Stomatologiya". 1981; No. 5: 63—67