Dirkzwager, Anja J. E., und Leonel Gonçalves. 2020. „Imprisonment in Europe: An Overview of Current and Up-To-Date Prison Research“. Kriminologie - Das Online-Journal | Criminology - The Online Journal, Nr. 2 (Juni), 130-33. https://doi.org/10.18716/ojs/krimoj/2020.2.1.