@phdthesis{Poehner2021,
  author      = {Nicolai P{\"o}hner},
  title       = {Educational robotics competitions as out-of-school learning setting for STEM education: An empirical study on students' learning of problem solving skills through participation in the World Robot Olympiad},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t W{\"u}rzburg},
  doi       = {10.25972/OPUS-24317},
  year        = {2021},
}