Unintegrated Double Parton Distributions - a Summary
  We present main elements of the construction of unintegrated double parton distribution functions which depend on transverse momenta of partons. We follow the method proposed by Kimber, Martin and Ryskin for a construction of unintegrated single parton distributions from the standard parton distribution functions. 
Krzysztof Golec-Biernat and Anna Stasto
hep-ph