@article{etna_vol29_pp81-96,
  author  = {Michiel E. Hochstenbach and Bor Plestenjak},
  title   = {Harmonic Rayleigh-Ritz extraction for the multiparameter eigenvalue problem},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {29},
  year    = {2007-2008},
  pages   = {81--96},
}