@article{Marquard:20142J,
  author = "Marquard, Peter",
  title = "{Four-loop on-shell integrals: MSbar -- on-shell relation and g-2}",
  doi = "10.22323/1.180.0237",
  journal = "PoS",
  year = 2014,
  volume = "EPS-HEP 2013",
  pages = "237"
}