@inproceedings{vanBaal:2009oR,
  author = "van Baal, Pierre",
  title = "{The Witten index revisited}",
  doi = "10.22323/1.061.0055",
  booktitle = "Proceedings of LIGHT CONE 2008 Relativistic Nuclear and Particle Physics {\textemdash} PoS(LC2008)",
  year = 2009,
  volume = "061",
  pages = "055"
}