@phdthesis{Krieger2017,
  author      = {Alexander Krieger},
  title       = {Skill Variety as a Driver of Entrepreneurship},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-3c4e-3dd0},
  year        = {2017},
}