MIZUTA, Yoshihiro. Continuity properties of Riesz potentials and boundary limits of Beppo Levi functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 63, p. 238–260, 1988. DOI: 10.7146/math.scand.a-12238. Disponível em: https://journals.msp.org/mscand/article/view/1428. Acesso em: 24 jul. 2026.