BAYART, F. Essential norms of composition operators and multipliers acting between different Hardy spaces. Annales Fennici Mathematici, [S. l.], v. 49, n. 2, p. 713–729, 2024. DOI: 10.54330/afm.152664. Disponível em: https://afm.journal.fi/article/view/152664. Acesso em: 22 dec. 2024.