@phdthesis{Knoth2004,
  author      = {Annekathrin Knoth},
  title       = {Marianne Werefkins russische Wurzeln},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-f157-b66c},
  year        = {2004},
}