1. Penal Reform International. Global prison trends: Penal Reform International; 2015.
https://cdn.penalreform.org/wp-content/uploads/2015/04/PRI-Prisons-global-trends-report-LR.pdf
.
2. Walmsley R. World prison population list (eleventh edition). Int Center Pris Stud. 2015.
http://www.prisonstudies.org/sites/default/files/resources/downloads/world_prison_population_list_11th_edition_0.pdf
.
3. OECD. Society at a Glance 2016: OECD Social Indicators; 2016.
https://doi.org/10.1787/9789264261488-en
.
4. Swiss Federal Statistics Office: Swiss Federal Statistics Office, crime and criminal justice.; 2017.
5. Lehtmets A, Pont J. Prison health care and medical ethics: a manual for health-care workers and other prison staff with responsibility for prisoners’ well-being: Council of Europe; 2014.
https://rm.coe.int/publications-healthcare-manual-web-a5-e/16806ab9b5
.