Monads for framed sheaves on Hirzebruch surfaces
  We define monads for framed torsion-free sheaves on Hirzebruch surfaces and use them to construct moduli spaces for these objects. These moduli spaces are smooth algebraic varieties, and we show that they are fine by constructing a universal monad. 
Claudio Bartocci, Ugo Bruzzo, Claudio L. S. Rava
math.AG