@article{Bhattacharya:2018mC,
  author = "Bhattacharya, Shohini  and  Metz, Andreas  and  Kumar Ojha, Vikash  and  Tsai, Jeng-Yuan  and  Zhou, Jian",
  title = "{Accessing generalized TMDs through double Drell-Yan and double $\eta_c$ production processes}",
  doi = "10.22323/1.316.0149",
  journal = "PoS",
  year = 2018,
  volume = "DIS2018",
  pages = "149"
}