@Article{ 
  gimamomu09,
  author = { Giaquinta, Mariano and Mariano, Paolo Maria and Modica, Giuseppe and Mucci, Domenico },
  title = { Stratified energies: Ground States with Cracks },
  journal = { Proceedings of the IUTAM Symposium     "Progress in the Theory and Numerics of Configurational Mechanics,      Erlangen-Nuremberg, Germany, October 20-24" },
  year = { 2009 },
  volume = { IUTAM Bookseries },
  pages = { 159-168 },
  URL = { http://cvgmt.sns.it/paper/572/ },
  note = { cvgmt preprint}
}