Kanaev А. Т., G. V. Semenchenko, A. A. Konysbayeva, A. A. Shilmanova, and Z. K. Kanayeva, “Method of gold extraction from ores of bakyrchik deposit by percolation bioleaching”, IJBCh, vol. 8, no. 2, pp. 28–35, Dec. 2015.