Golikov, Alexander. “Investigation of Lettersa As Knowledge Aggregates: Opportunities and Limitations”. Visnyk of V. N. Karazin Kharkiv National University. Series "Sociological studies of contemporary society: methodology, theory, methods" 390 (February 23, 2018): 90-94. Accessed May 3, 2024. https://periodicals.karazin.ua/ssms/article/view/9895.