@phdthesis{Scherrer2020,
  author      = {Vsevolod Scherrer},
  title       = {Students’ Achievement Motivation During the School Career: Development, Correlates, and Effects of Ability Grouping},
  type        = {doctoralthesis},
  pages       = {294},
  school      = {Universit{\"a}t Trier},
  doi       = {10.25353/ubtr-xxxx-cb5a-50b2},
  year        = {2020},
}