LUTFULLINA, Y. V. . Enriching the Vocabulary of Elementary School Students in the Russian Language Lessons. European Journal of Life Safety and Stability (2660-9630), [S. l.], v. 15, p. 287-291, 2022. Disponível em: http://www.ejlss.indexedresearch.org/index.php/ejlss/article/view/540. Acesso em: 5 oct. 2025.