@Article{ 
  neg10,
  author = { Negri, Matteo },
  title = { Energy release rate along a kinked path },
  journal = { Math. Meth. Appl. Sci. },
  year = { 2011 },
  volume = { 34 },
  pages = { 384-396 },
  URL = { http://cvgmt.sns.it/paper/997/ },
  note = { cvgmt preprint}
}