On the Best Constant in the Jackson–Stechkin Inequality. Advances in Systems Science and Applications, [S. l.], v. 26, n. 1, p. 1–14, 2026. DOI: 10.25728/assa.2026.26.1.2131. Disponível em: https://ijassa.ipu.ru/index.php/ijassa/article/view/2131. Acesso em: 24 may. 2026.