For citations:

Ganiyev S.A. Pronominal adverb nekogda in Russian texts of the 17th–18th centuries (a study based on the Russian National Corpus and dictionaries). Kazan Journal of Historical, Linguistic, and Legal Research. 2025;167(5-6):131-142. (In Russ.) https://doi.org/10.26907/2541-7738.2025.5-6.131-142