@article{Boomsma:2012rM,
  author = "Boomsma, Jorn  and  Boer, Daniel",
  title = "{Spontaneous CP violation in the NJL model at $\theta = \pi$}",
  doi = "10.22323/1.077.0134",
  journal = "PoS",
  year = 2012,
  volume = "ConfinementVIII",
  pages = "134"
}