@article{etna_vol39_pp186-201,
  author  = {Luca Gerardo-Giorda and Lucia Mirabella},
  title   = {Spectral analysis of a block-triangular preconditioner for the bidomain system in electrocardiology},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {39},
  year    = {2012},
  pages   = {186--201},
}