Tame Coverings and Fundamental Groups of Algebraic Varieties. Part II: Branch Curves with Higher Singularities
Shreeram S. Abhyankar · American Journal of Mathematics · 1960
Shreeram Abhyankar, Tame Coverings and Fundamental Groups of Algebraic Varieties. Part II: Branch Curves with Higher Singularities, American Journal of Mathematics, Vol. 82, No. 1 (Jan., 1960), pp. 120-178