PHAM, R.; HYZER, E.; RUDENKO, A. Beach Math. Pittsburgh Interdisciplinary Mathematics Review, Pittsburgh, v. 2, p. 138–141, 2024. DOI: 10.5195/pimr.2024.45. Disponível em: https://pimr.pitt.edu/pimr/article/view/45. Acesso em: 18 jan. 2025.