Е. А. Целунова, “On the Norm of the South-West Russia 16th–17th-Century Literary Language”, KLB, vol. 39, no. 2, pp. 21–33, Dec. 1988, Accessed: Nov. 07, 2025. [Online]. Available: https://www.zurnalai.vu.lt/kalbotyra/article/view/31061