@inproceedings{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", booktitle = "Proceedings of VIIIth Conference Quark Confinement and the Hadron Spectrum {\textemdash} PoS(ConfinementVIII)", year = 2012, volume = "077", pages = "134" }