Torsion Free Sheaves on Cuspidal Curves
  We study torsion free sheaves on integral projective curves with at most ordinary cusps as singularities. Adjusting Seshadri's structure from the nodal case to this one, we describe these sheaves by means of a triple defined in the normalization of the curve. 
Dan Avritzer, Flaviana Andrea Ribeiro and Renato Vidal Martins
math.AG