Horniatko-Szumiłowicz, Anna. “ The Originality of the Research on Oles Ulianenko’s Literary Works in Feliks Shteinbuk’s Monograph”. Studia Ukrainica Posnaniensia, vol. 10, no. 2, Mar. 2023, pp. 189-03, doi:10.14746/sup.2022.10.2.13.