DIMCA, A.; GIBSON, C. G. Classification of Equidimensional contact unimodular map germs. MATHEMATICA SCANDINAVICA, [S. l.], v. 56, p. 15–28, 1985. DOI: 10.7146/math.scand.a-12085. Disponível em: https://www.mscand.dk/article/view/12085. Acesso em: 5 may. 2024.