@article{TielenMollerGoddekeVuik2020a,
  title         = {p-multigrid methods and their comparison to h-multigrid methods within {I}sogeometric {A}nalysis},
  author        = {Roel Tielen and Matthias M{\"o}ller and Dominik G{\"o}ddeke and Cornelis Vuik},
  year          = {2020},
  journal       = {Computer Methods in Applied Mechanics and Engineering},
  volume        = {372},
  pages         = {113347},
  doi           = {10.1016/j.cma.2020.113347},
  issn          = {0045-7825},
  url           = {https://doi.org/10.1016/j.cma.2020.113347},
  eprint        = {arXiv:1901.01685}
}