BUDDE, C. A Note on Approximations of Bi-continuous Cosine Families. Contemporary Mathematics , [S. l.], v. 6, n. 5, p. 7214–7222, 2025. DOI: 10.37256/cm.6520258411. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/8411. Acesso em: 10 jan. 2026.