Papats, Alina. “INSTITUTIONS OF SECONDARY EDUCATION IN KATERINOSLAV PROVINCE IN THE EARLY XXth CENTURY AND LEARNING FEATURES (Cases of Katerinoslav Male Gymnasium and Mariupol Mariinsky Female Gymnasium)”. Skhid, no. 6(170) (December 21, 2020): 21–25. Accessed December 3, 2021. http://skhid.kubg.edu.ua/article/view/218568.