@inproceedings{Chekelian:2014xz,
  author = "Chekelian, Vladimir",
  title = "{Proton structure and PDFs at HERA }",
  doi = "10.22323/1.192.0004",
  booktitle = "Proceedings of International Conference on the Structure and the Interactions of the Photon including the 20th International Workshop on Photon-Photon Collisions and the International Workshop on High Energy Photon Linear Colliders {\textemdash} PoS(Photon 2013)",
  year = 2014,
  volume = "192",
  pages = "004"
}