@article{Solovtsova:2012hc,
  author = "Solovtsova, Olga",
  title = "{Bjorken sum rule at four loops}",
  doi = "10.22323/1.138.0026",
  journal = "PoS",
  year = 2012,
  volume = "QFTHEP2011",
  pages = "026"
}