@Misc{ 
  RimVer11,
  author = { Rimoldi, Michele and Veronelli, Giona },
  title = { $f$-Harmonic maps and applications to gradient Ricci solitons },
  journal = {  },
  year = { 2011 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1720/ },
  note = { cvgmt preprint}
}