CARDECCIA, R.; MURO, S. Multiple recurrence and hypercyclicity. MATHEMATICA SCANDINAVICA, [S. l.], v. 128, n. 3, 2022. DOI: 10.7146/math.scand.a-133256. Disponível em: https://www.mscand.dk/article/view/133256. Acesso em: 30 jan. 2023.