Борзенко, Олександр Іванович. 2020. “Poet and Scientist Nikolai Kostomarov: The Problem of Identity”. The Journal of V. N. Karazin Kharkiv National University. Series “Philology”, no. 86 (November), 9-14. https://doi.org/10.26565/2227-1864-2020-86-01.