Referências: |
1) Gibson, C.G., Singular Points of Smooth Mappings, Research Notes in Maths., 25, Pitman, 1979.
2) Brocker, T., Lander, L., Differentiable Germs and Catastrophes, LMS Lecture Note Series, 17.
3) Tari, F., Singularidades de Aplicações Diferenciáveis, Notas Didáticas do ICMC, 34, 1999.
4) Castrigiano, D.P.L., Hayes, S.A., Catastrophe Theory, Addison-Wesley, New York, 1993.
5) Bruce, J. W., Giblin, P.J., Curves and Singularities: A Geometrical Introduction to Singularity Theory, Cambridge University Press, 1984. |