On Sufficient Conditions for Optimalityin the Minimum Frequency Maximization Problemfor a Shell of Revolution at a Given Weight. Advances in Systems Science and Applications, [S. l.], v. 26, n. 1, p. 66–75, 2026. DOI: 10.25728/assa.2026.26.1.2117. Disponível em: https://ijassa.ipu.ru/index.php/ijassa/article/view/2117. Acesso em: 24 may. 2026.