@Article{ 
  Stu17,
  author = { Stuvard, Salvatore },
  title = { Multiple valued Jacobi fields },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2019 },
  doi = { 10.1007/s00526-019-1545-9 },
  volume = { 58 },
  number = { 3 },
  pages = { 83 },
  URL = { http://cvgmt.sns.it/paper/3323/ },
  note = { cvgmt preprint}
}