WOOD, John C. Lewy’s theorem fails in higher dimensions. Mathematica Scandinavica, Berkeley, CA, United States, v. 69, p. 166–166, 1991. DOI: 10.7146/math.scand.a-12375. Disponível em: https://journals.msp.org/mscand/article/view/1303. Acesso em: 24 jul. 2026.