Ta, T. A., L. D. Pham, H. S. Nguyen, C. V. Hoang, C. H. Le, C. T. Dang, H. T. T. Nguyen, and N. V. Nguyen. “Electrochemical Performance of \(\text{Na}_{0.44}\text{MnO}_{2}\) Synthesized by Hydrothermal Method Using As a Cathode Material for Sodium Ion Batteries”. Communications in Physics, vol. 27, no. 2, Aug. 2017, p. 143, doi:10.15625/0868-3166/27/2/9631.