@inproceedings{Chetyrkin:2010Y+,
  author = "Chetyrkin, Konstantin",
  title = "{R(s) Bjorken sum rule and the Crewther Relation in order alpha_s^4}",
  doi = "10.22323/1.092.0073",
  booktitle = "Proceedings of RADCOR 2009 - 9th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology)  {\textemdash} PoS(RADCOR2009)",
  year = 2010,
  volume = "092",
  pages = "073"
}