V. Dzhahan, P. Romanenko, A. Kryvenda, V. Boiko, O. Khodosovtsev, and V. Polishchuk, “Half a century with youthful zeal (for the 50th anniversary of Professor Ihor Yuriyovich Kostikov)”, CBJ, vol. 6, no. 3, pp. 404–406, Nov. 2011, Accessed: Nov. 15, 2026. Available: https://www.cbj.kspu.edu/index.php/cbj/article/view/558