@Misc{ 
  PraPug13,
  author = { Pratelli, Aldo and Puglisi, Simona },
  title = { Elastic deformations on the plane and approximations },
  journal = { HCDTE, Nonlinear Hyperbolic PDEs, Dispersive and Transport Equations'', published in the AIMS Book Series, Applied Mathematics },
  year = { 2013 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2116/ },
  note = { cvgmt preprint}
}