Lidiia Andriivna Poperechna, “Scientific readings in the Institute of Book Studies of VNLU in honor of bibliographer and bibliologist Stepan Yosypovych Petrov”, Rukopisna ta knižkova spadŝina Ukraïni, vol. 21, pp. 564–567, Dec. 2017, Accessed: Sep. 23, 2026. Available: https://ojs.nbuv.gov.ua/index.php/ojs/article/view/928