@article{Koike:2016zX,
  author = "Koike, Yuji  and  Kanazawa, Koichi  and  Metz, Andreas  and  Pitonyak, Daniel  and  Schlegel, Marc",
  title = "{Lorentz invariance relations for twist-3 functions and frame-independence of twist-3 cross sections}",
  doi = "10.22323/1.265.0220",
  journal = "PoS",
  year = 2016,
  volume = "DIS2016",
  pages = "220"
}