Філон, М. І., and С. Г. Бутко. “The Intentionality of Markiian Shashkevych’s Ukrainian Language Sermons”. The Journal of V. N. Karazin Kharkiv National University. Series “Philology”, no. 76, Dec. 2017, pp. 377-82, https://periodicals.karazin.ua/philology/article/view/9351.