https://www.gisreportsonline.com/r/sweden-immigrants-crisis/
https://www.destatis.de/DE/PresseService/Presse/Pressemitteilungen/2017/08/PD17_261_12511pdf.pdf?__blob=publicationFile
http://www.euronews.com/2018/07/09/europe-s-immigration-crisis-still-lacks-permanent-solution-does-european-ncna889636