@inproceedings{Poggiolini:2006aP,
  author = "Poggiolini, Laura  and  Stefani, Gianna",
  title = "{On second order sufficient optimality conditions for a bang-singular arc}",
  doi = "10.22323/1.018.0017",
  booktitle = "Proceedings of Control Systems: Theory, Numerics and Applications {\textemdash} PoS(CSTNA2005)",
  year = 2006,
  volume = "018",
  pages = "017"
}