Войтович, С. А., І. І. Григорчак, and М. В. Матвіїв. “Hierarchical Duplicate Matrix Structure C <FeS2&gt; For Li + and Mg ++ - Intercalation Current Formation”. Journal of Surface Physics and Engineering, Vol. 8, no. 1, Jan. 2010, pp. 43 -52, https://periodicals.karazin.ua/pse/article/view/11852.