Virasoro Groups and Hurwitz Schemes
  In this paper we study the Hurwitz scheme in terms of the Sato Grassmannian and the algebro-geometric theory of solitons. We will give a characterization, its equations and a show that there is a group of Virasoro type which uniformizes it. 
Jos\'e M. Mu\~noz Porras and Francisco J. Plaza Mart\'in