MARKHABATOV, N.D. Ranks and approximations for families of cubic theories. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 111, n. 3, p. 81–90, 2023. DOI: 10.31489/2023m3/81-90. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/585. Acesso em: 1 sep. 2025.