http://www.srvs.sk/
http://www.sfpa.sk/sk/
http://portal.statistics.sk/showdoc.do?docid=4
http://epp.eurostat.ec.europa.eu/portal/page/portal/eurostat/home/
http://www.obecvysoka.com/
http://www.mladieuropania.sk/studenti-vs-fnm03/
https://bits.academia.edu/MartinAngelovi%C4%8D