I. Grygorchak, I. Budzulyak, F. Ivashchyshyn, and R. Shvets, “Properties and Practical Application of Nanoporous Silicate Matrices, Filled with Mixture of NaNO2 and BaTiO3 Ferroelectrics. influence of Co-Encapsulation”, Phys. Chem. Sol. State, vol. 17, no. 4, pp. 465–470, Dec. 2016.