Bibliografia
Principal
- An Introduction to Differentiable Manifolds and Riemannian Geometry: W. M. Boothby 1986 Academic Press
- Differential Forms and Applications: M. P. do Carmo 1994 Springer-Verlag
- Geometria Riemanniana: M. P. do Carmo 1979 IMPA
- Modern Differential Geometry of Curves and Surfaces: A. Gray 1993 CRC Press
- Geometry of Surfaces: J. Stillwell 1992 Springer-Verlag