Bar’yakhtar, V., A. Zagorodny, V. Loktev, I. Mryglod, M. Shul’ga, and I. Yukhnovs’kyi. “To the 110th Anniversary of Academician M.M. Bogolyubov Birthday”. Ukrainian Journal of Physics 64, no. 8 (September 18, 2019): 776. Accessed September 29, 2020. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019551.