Książek, Piotr, Magdalena Raszewska, Jolanta Herda, Krzysztof Kiernicki, and Maciej Michalak. 2011. “The Length of Doing Time and the Mental Health of Convicts”. Polish Journal of Public Health 112 (2): 117-19. https://czasopisma.umlub.pl/pjph/article/view/1915.