@phdthesis{Wagner2013,
  author      = {Christian Wagner},
  title       = {Multigrid Optimization Methods for High Performance Computing},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-c295-9367/},
  year        = {2013},
}