@Misc{ 
  Olb17b,
  author = { Olbermann, Heiner },
  title = { On a boundary value problem for conically deformed thin elastic sheets },
  journal = {  },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4392/ },
  note = { cvgmt preprint}
}