Resumen de A combinatorial approach to singularities of normal surfaces
In this paper we study generic coverings of \mathbb{C}^2 branched over a curve s.t. the total space is a normal analytic surface, in terms of a graph representing the monodromy of the covering, called monodromy graph. A complete description of the monodromy graphs and of the local fundamental groups is found in case the branch curve is \lbrace x^n=y^m\rbrace (with n\le m) and the degree of the cover is equal to n or n-1.
