@inproceedings{Hammou:1999Sc,
  author = "Hammou, A.",
  title = "{On the perturbative corrections around D-string instantons  }",
  doi = "10.22323/1.002.0014",
  booktitle = "Proceedings of European Network on Physics beyond the Standard Model {\textemdash} PoS(trieste99)",
  year = 1999,
  volume = "002",
  pages = "014"
}