Gauge theories on compact toric surfaces, conformal field theories and   equivariant Donaldson invariants
  We show that equivariant Donaldson polynomials of compact toric surfaces can be calculated as residues of suitable combinations of Virasoro conformal blocks, by building on AGT correspondence between N = 2 supersymmetric gauge theories and two-dimensional conformal field theory. 
Mikhail Bershtein, Giulio Bonelli, Massimiliano Ronzani and Alessandro   Tanzini
hep-th math.AG math.RT