LI, Daniel; QUEFFÉLEC, Hervé; RODRIGUEZ-PIAZZA , Luis. Composition operators with surjective symbol and small approximation numbers. North-Western European Journal of Mathematics, [S. l.], n. 5, p. 1–20, 2019. Disponível em: https://nwejm.univ-lille.fr/index.php/nwejm/article/view/36.. Acesso em: 18 oct. 2024.