@Article{ 
  DoNoWiWo18,
  author = { Dondl, Patrick W. and Novaga, Matteo and Wirth, Benedikt and Wojtowytsch, Stephan },
  title = { A Phase-field Approximation of the Perimeter under a Connectedness Constraint },
  journal = { SIAM J. Math. Anal. },
  year = { 2019 },
  volume = { 51 },
  number = { 5 },
  pages = { 3902–3920 },
  URL = { http://cvgmt.sns.it/paper/4070/ },
  note = { cvgmt preprint}
}