@Misc{ 
  Pet23,
  author = { Peter Olamide Olanipekun,  },
  title = { Rigidity Result for Four Dimensional Willmore Submanifolds with Boundary },
  journal = {  },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6077/ },
  note = { cvgmt preprint}
}