ESSÉN, M.; HALISTE, K. A problem of Burkholder and the existence of harmonic majorants of |x|p in certain domains in Rd. Annales Fennici Mathematici, [S. l.], v. 9, n. 1, p. 107–116, 1984. DOI: 10.5186/aasfm.1984.0906. Disponível em: https://afm.journal.fi/article/view/134488. Acesso em: 25 nov. 2024.