@phdthesis{Efrosinin2004,
  author      = {Dmitry Efrosinin},
  title       = {Controlled Queueing Systems with Heterogeneous Servers},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-6801-c7c6},
  year        = {2004},
}