@Misc{ 
  SanSch21,
  author = { Santilli, Mario and Schmidt, Bernd },
  title = { Two phase models for elastic membranes with soft inclusions },
  journal = { Rendiconti Lincei  Matematica e Applicazioni },
  year = { 2021 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5161/ },
  note = { cvgmt preprint}
}