@inproceedings{Mulders:2016ob,
  author = "Mulders, Piet",
  title = "{The Operator Structure of TMDs}",
  doi = "10.22323/1.249.0005",
  booktitle = "Proceedings of QCD Evolution 2015 {\textemdash} PoS(QCDEV2015)",
  year = 2016,
  volume = "249",
  pages = "005"
}