“Family Correspondence of Famous Ukrainians As a Source of Prosopographic Information (on the Example of Epistolary Communications of the Chykalenkos). ”. 2025. V. N. Karazin Kharkiv National University Bulletin History of Ukraine. Ukrainian Studies: Historical and Philosophical Sciences 41 (December): 113-27. https://doi.org/10.26565/2227-6505-2025-41-10.