I. Guryanov, I. Yarmakeev, A. Kiselnikov, and I. Harkova, “Text Complexity: Periods of Study in Russian Linguistics”, Rev. Publicando, vol. 4, no. 13 (2), pp. 616–625, Dec. 2017, Accessed: Jan. 22, 2025. [Online]. Available: https://revistapublicando.org/revista/index.php/crv/article/view/922