@Article{ 
  MarPao12,
  author = { Marcellini, Paolo and Paolini, Emanuele },
  title = { Origami and Partial Differential Equations },
  journal = { Imagine Math. },
  year = { 2012 },
  doi = { 10.1007/978-88-470-2427-4_22 },
  pages = { 241--250 },
  URL = { http://cvgmt.sns.it/paper/4908/ },
  note = { cvgmt preprint}
}