@article{Buffing:20131A,
  author = "Buffing, Maarten  and  Mukherjee, A.  and  Mulders, Piet",
  title = "{Universality of TMD distribution functions}",
  doi = "10.22323/1.191.0226",
  journal = "PoS",
  year = 2013,
  volume = "DIS 2013",
  pages = "226"
}