ULANOVSKII, A. On Landau’s phenomenon in $\boldsymbol R^n$. Mathematica Scandinavica, Berkeley, CA, United States, v. 88, n. 1, p. 72–78, 2001. DOI: 10.7146/math.scand.a-14314. Disponível em: https://journals.msp.org/mscand/article/view/891. Acesso em: 24 jul. 2026.