@phdthesis{Winkler2014,
  author      = {Markus Heinrich Winkler},
  title       = {Motivational properties of reward associated stimuli - Conditioning studies with smoke and monetary reinforcement},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year        = {2014},
}