@article{ValoriDemoulinPariat2012,
  author    = {Gherardo Valori and Pascal Demoulin and E. Pariat},
  title     = {Comparing values of the relative magnetic helicity in finite volumes},
  journal   = {Solar physics : a journal for solar and solar-stellar research and the study of solar terrestrial physics},
  volume    = {278},
  number    = {2},
  pages     = {347 -- 366},
  doi       = {10.1007/s11207-012-9951-6},
  year      = {2012},
}