Masliychuk , V. L. “‘The Poltava Failures’. The Attempts to Open the Secular School in Poltava (the End of the 18th Century – 1806)”. Zaporizhzhia Historical Review, Vol. 1, no. 44, Dec. 2020, pp. 24-28, https://istznu.org/index.php/journal/article/view/870.