JANSON, Svantje. Hankel Operators on Bergman Spaces with Change of Weight. Mathematica Scandinavica, Berkeley, CA, United States, v. 71, p. 267–276, 1992. DOI: 10.7146/math.scand.a-12428. Disponível em: https://journals.msp.org/mscand/article/view/1219. Acesso em: 24 jul. 2026.