@Misc{ 
  danmccsav09,
  author = { Matthes, Daniel and McCann, Robert J. and Savaré, Giuseppe },
  title = { A Family of Nonlinear Fourth Order Equations of Gradient Flow Type },
  journal = {  },
  year = { 2009 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/649/ },
  note = { cvgmt preprint}
}