@incollection{DeC:06a,
  author = "T. De Bie and N. Cristianini",
  title = {Semi-supervised learning using semi-definite programming},
  booktitle = "Semi-supervised learning",
  publisher = "MIT Press",
  address = "Cambridge-Massachussets",
  editor = {O. Chapelle and B. Scho\"{e}lkopf and A. Zien},
  year = "2006"
}