Lyzhachenko, N., and V. Nikolaevskyj. “PROSPECTS FOR THE USE OF THE RESOURCE BASE ZAVALLYA GRAPHITE DEPOSITS”. Visnyk of Taras Shevchenko National University of Kyiv. Geology, vol. 2, no. 61, Jan. 2025, pp. 41-44, https://geology.bulletin.knu.ua/article/view/1825.