@phdthesis{Raber2004,
  author      = {Ulrich Raber},
  title       = {Nonconvex All-Quadratic Global Optimization Problems: Solution Methods, Application and Related Topics},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-7bcc-8901},
  year        = {2004},
}