@phdthesis{Cao2014,
  author      = {Ji Cao},
  title       = {Analysis of Portfolio Risk of Private Investors},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-d54f-4db9},
  year        = {2014},
}