ČUČKOVIĆ, Željko; ŞAHUTOĞLU, Sönmez. Essential norm estimates for Hankel operators on convex domains in $\mathbb{C}^2$. Mathematica Scandinavica, Berkeley, CA, United States, v. 120, n. 2, p. 305–316, 2017. DOI: 10.7146/math.scand.a-25793. Disponível em: https://journals.msp.org/mscand/article/view/318. Acesso em: 24 jul. 2026.