Vlakhov, T. .; Hadjichristov, G.; Marinov, Y.; Scaramuzza, N. Ion Conductivity of Nanocomposite Solid Polymer Electrolyte PEO-PVP-NaIO4 With Added TiO2 Nanoparticles. C. R. Acad. Bulg. Sci. 2022, 75, 349-357.