@Article{ 
  Mra21,
  author = { Mramor, Alexander },
  title = { On self shrinkers of medium entropy in $\mathbb{R}^4$ },
  journal = { Geom. Topol. },
  year = { 2021 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6928/ },
  note = { cvgmt preprint}
}