@inproceedings{Angelantonj:1999Pu,
  author = "Angelantonj, C.",
  title = "{Non-Supersymmetric Open String Vacua  }",
  doi = "10.22323/1.002.0015",
  booktitle = "Proceedings of European Network on Physics beyond the Standard Model {\textemdash} PoS(trieste99)",
  year = 1999,
  volume = "002",
  pages = "015"
}