WOOD, John C. Lewy’s theorem fails in higher dimensions. MATHEMATICA SCANDINAVICA, [S. l.], v. 69, p. 166–166, 1991. DOI: 10.7146/math.scand.a-12375. Disponível em: https://tidsskrift.dk/math/article/view/12375. Acesso em: 14 aug. 2026.