I have always been interested in rare and exceptional phenomena in the morphology and morphosyntax on languages. My dissertation (1997) was about an enigmatic variation in the order of morphemes in the declension of Mari. When studying the Turkic languages, I became fascinated with a type of Chuvash suffixes that was, in my opinion, not correctly understood in earlier research; I concluded that they were syntactic nominalizers (2011). Most of my other research themes also relate to the languages of the Volga–Kama region in Russia, for instance, the grammatical category of plural in Mari; the birth and development of minority literary languages; variation in the literary norms; the discussion in electronic media pertaining to the Mordvin languages from the viewpoint of discourse analysis. Producing and developing research materials and dictionaries for linguists has been an important part of my work. I have organized collecting electronic text corpora, compiling of reverse dictionaries and word lists, and have participated in writing bilingual dictionaries.