@Article{ 
  RufTri18,
  author = { Ruffoni, Lorenzo and Tripaldi, Francesca },
  title = { Extending an example by Colding and Minicozzi },
  journal = { The Journal of Geometric Analysis },
  year = { 2019 },
  doi = { https://doi.org/10.1007/s12220-019-00177-4 },
  volume = { 30 },
  pages = { 1028–1041 },
  URL = { http://cvgmt.sns.it/paper/4692/ },
  note = { cvgmt preprint}
}