Bibliografia
Principal
- Discrete Mathematics: N. Biggs 1993 Oxford University Press
- Combinatorics: Topics, Techniques, Algorithms: P. J. Cameron 1994 Cambridge University Press
- Concrete Mathematics: R. Graham, D. Knuth and O. Patashnik 1994 Addison-Wesley
- Discrete Mathematics: Elementary and Beyond: L. Lovasz, K. L. Vesztergombi and J. Pelikan, 2003 Undergraduate Texts in Mathematics, Springer-Verlag