SKUTLABERG, Olav. Topological equivalence of finitely determined real analytic plane-to-plane map germs. Mathematica Scandinavica, Berkeley, CA, United States, v. 109, n. 2, p. 161–184, 2011. DOI: 10.7146/math.scand.a-15183. Disponível em: https://journals.msp.org/mscand/article/view/514. Acesso em: 24 jul. 2026.