LUIRO, H.; NUUTINEN, J. On the continuity of discrete maximal operators in Sobolev spaces. Annales Fennici Mathematici, [S. l.], v. 39, n. 1, p. 175–185, 2014. DOI: 10.5186/aasfm.2014.3916. Disponível em: https://afm.journal.fi/article/view/135482. Acesso em: 25 nov. 2024.